diff --git a/.cursor/rules/ui-and-theming.mdc b/.cursor/rules/ui-and-theming.mdc
index 7ab5134..ffafb3f 100644
--- a/.cursor/rules/ui-and-theming.mdc
+++ b/.cursor/rules/ui-and-theming.mdc
@@ -59,3 +59,11 @@ Don't duplicate navigation in a page — extend `NavigationContent` inside Layou
 ## Branding
 
 The canonical product brand is **Deck Hearth** (two words, internal cap), ratified 2026-05-24 in the `pick-a-name` convoy. The repo directory + GitHub project name remain `tcg-vault` until the queued `rename-repo-and-vercel-project` convoy ships. New UI copy MUST use `Deck Hearth` verbatim — do not introduce a third name, do not abbreviate to "DH" outside the logo glyph (currently used in `components/Layout.js` lines 621, 714 as the sidebar logo monogram).
+
+## Product vocabulary (ownership vs lists)
+
+- **My Collection** — global ownership (`user_cards`, `/my-cards`). Never say "Owned Cards" or "Mark Owned" in UI.
+- **Lists** — curated binders (`collections` table, `/collections`). Say "List" in buttons/modals; URL stays `/collections` until a future slug convoy.
+- **Synced binder** — display name for the system collection (`is_system_collection`); DB literal `'All My Cards'` is internal only.
+- Import copy from `lib/collection-vocabulary.js` (`VOCAB`, `collectionDisplayName`, `formatProcessedDestination`).
+- CI `forbidden-stale-strings` enforces the three retired phrases in `pages/` + `components/`.
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6e18782..c99febe 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -208,6 +208,40 @@ jobs:
           fi
           echo "OK: no client-side LLM key leakage patterns detected."
 
+  forbidden-stale-strings:
+    name: No stale ownership/collection copy
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Fail if forbidden UI strings appear in pages/ or components/
+        run: |
+          # rename-collections-vocabulary convoy — ownership vs curated-list taxonomy.
+          # API/DB literals (e.g. system collection name) live under pages/api/ only.
+          PATTERNS=(
+            'Mark Owned'
+            'Owned Cards'
+            'All My Cards'
+          )
+          FOUND=()
+          for pattern in "${PATTERNS[@]}"; do
+            while IFS= read -r line; do
+              FOUND+=("$line")
+            done < <(grep -rFn "$pattern" pages/ components/ \
+              --include='*.js' \
+              --exclude-dir=api 2>/dev/null || true)
+          done
+          if [ ${#FOUND[@]} -gt 0 ]; then
+            echo "::error::Forbidden stale UI string(s) in pages/ or components/. Use lib/collection-vocabulary.js labels — see AGENTS.md § Product vocabulary."
+            printf '%s\n' "${FOUND[@]}" | sort -u | while IFS= read -r line; do
+              file=$(echo "$line" | cut -d: -f1)
+              lineno=$(echo "$line" | cut -d: -f2)
+              text=$(echo "$line" | cut -d: -f3-)
+              echo "::error file=${file},line=${lineno}::${text}"
+            done
+            exit 1
+          fi
+          echo "OK: no forbidden stale strings in pages/ or components/."
+
   test:
     name: Unit tests (vitest)
     runs-on: ubuntu-latest
diff --git a/AGENTS.md b/AGENTS.md
index ca78b54..a34a4fd 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -12,6 +12,20 @@ Guidance for agents and humans working in this repo. Prefer existing patterns ov
 > as a historical regression-lock per Risk 4 of the pick-a-name
 > convoy.
 
+## Product vocabulary
+
+User-facing copy distinguishes **ownership** (everything you own) from **curated lists** (binders/subsets). Import labels from `lib/collection-vocabulary.js` (`VOCAB`, `collectionDisplayName`) rather than hardcoding strings.
+
+| Concept | UI label | Route / schema | Notes |
+| --- | --- | --- | --- |
+| Global ownership | **My Collection** | `/my-cards`, `user_cards` | Scanner default destination; replaces "Owned" / "Mark Owned" |
+| Curated list / binder | **List** / **Lists** | `/collections`, `/collection/[id]`, `collections` table | URL slug unchanged in v1; nav says "Lists" |
+| Auto-sync system list | **Synced binder** (display) | `collections` row with `is_system_collection = true` | DB name stays `'All My Cards'` — never render; use `collectionDisplayName()` |
+| Add ownership | **Add to My Collection** | `POST /api/user-cards`, scanner bulk | Replaces "Mark Owned" / "Mark as Owned" |
+| Add to curated list | **Add to List** | `POST /api/collections/:id/cards` | Replaces "Add to Collection" in scanner/card flows |
+
+CI job `forbidden-stale-strings` blocks `"Mark Owned"`, `"Owned Cards"`, and `"All My Cards"` in `pages/` + `components/` (API literals exempt).
+
 ## 1. Project overview
 
 A web app for managing trading-card-game collections (Magic, Pokémon, Lorcana). Users authenticate, build collections + decks, scan physical cards via a camera+AI-OCR flow, and share publicly. Admin users curate the card database.
diff --git a/components/BulkSelectionToolbar.js b/components/BulkSelectionToolbar.js
index f135307..21438a7 100644
--- a/components/BulkSelectionToolbar.js
+++ b/components/BulkSelectionToolbar.js
@@ -1,4 +1,5 @@
 import { useState } from 'react';
+import { VOCAB } from '../lib/collection-vocabulary.js';
 
 export default function BulkSelectionToolbar({ 
   selectedCards, 
@@ -96,7 +97,7 @@ export default function BulkSelectionToolbar({
             <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
               <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M5 13l4 4L19 7" />
             </svg>
-            <span className="hidden sm:inline">Own</span>
+            <span className="hidden sm:inline">{VOCAB.MY_COLLECTION}</span>
           </button>
         </div>
 
@@ -137,7 +138,7 @@ export default function BulkSelectionToolbar({
                 <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                   <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
                 </svg>
-                <span>Remove from Owned</span>
+                <span>{VOCAB.REMOVE_FROM_MY_COLLECTION}</span>
               </button>
 
               <div className="border-t border-gray-200 my-1"></div>
diff --git a/components/CardItem.js b/components/CardItem.js
index bc2291e..6ce70ee 100644
--- a/components/CardItem.js
+++ b/components/CardItem.js
@@ -1,5 +1,6 @@
 import { useState } from 'react';
 import { useRouter } from 'next/router';
+import { VOCAB } from '../lib/collection-vocabulary.js';
 
 // Expanding Add Button Component
 function ExpandingAddButton({ card, onAddToCollection, onAddToDeck, onMarkAsOwned }) {
@@ -31,7 +32,7 @@ function ExpandingAddButton({ card, onAddToCollection, onAddToDeck, onMarkAsOwne
             onClick={(e) => handleOptionClick(e, () => onAddToCollection([card]))}
             className="p-1.5 rounded-md shadow-lg transition-all duration-150 hover:scale-105 flex items-center space-x-1 text-xs whitespace-nowrap"
             style={{ backgroundColor: 'var(--accent-flame)', color: 'white' }}
-            title="Add to Collection"
+            title={VOCAB.ADD_TO_LIST}
           >
             <svg className="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
               <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10" />
@@ -55,7 +56,7 @@ function ExpandingAddButton({ card, onAddToCollection, onAddToDeck, onMarkAsOwne
             onClick={(e) => handleOptionClick(e, onMarkAsOwned)}
             className="p-1.5 rounded-md shadow-lg transition-all duration-150 hover:scale-105 flex items-center space-x-1 text-xs whitespace-nowrap"
             style={{ backgroundColor: 'var(--accent-ember)', color: 'white' }}
-            title="Mark as Owned"
+            title={VOCAB.ADD_TO_MY_COLLECTION}
           >
             <svg className="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
               <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M5 13l4 4L19 7" />
@@ -74,7 +75,7 @@ function ExpandingAddButton({ card, onAddToCollection, onAddToDeck, onMarkAsOwne
           color: 'white',
           boxShadow: '0 0 0 2px var(--accent-ember), 0 4px 6px -1px rgba(216, 67, 21, 0.3)'
         }}
-        title={isExpanded ? "Add to Collection" : "Show Options"}
+        title={isExpanded ? VOCAB.ADD_TO_LIST : 'Show Options'}
       >
         <svg 
           className={`w-4 h-4 transition-transform duration-150 ${isExpanded ? 'rotate-45' : ''}`} 
@@ -259,7 +260,7 @@ export default function CardItem({
               onAddToCollection(card);
             }}
             className="p-2 text-blue-600 hover:text-blue-700 hover:bg-blue-50 rounded-lg transition-colors"
-            title="Add to Collection"
+            title={VOCAB.ADD_TO_LIST}
           >
             <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
               <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10" />
@@ -381,7 +382,7 @@ export default function CardItem({
           card={card}
           onAddToCollection={onAddToCollection}
           onAddToDeck={onAddToDeck}
-          onMarkAsOwned={() => alert('Mark as owned (coming soon)')}
+          onMarkAsOwned={() => alert(`${VOCAB.ADD_TO_MY_COLLECTION} (coming soon)`)}
         />
       </div>
     </div>
diff --git a/components/CollectionSelectionModal.js b/components/CollectionSelectionModal.js
index 5014ee4..92a0109 100644
--- a/components/CollectionSelectionModal.js
+++ b/components/CollectionSelectionModal.js
@@ -1,4 +1,5 @@
 import { useState, useEffect } from 'react';
+import { VOCAB } from '../lib/collection-vocabulary.js';
 
 export default function CollectionSelectionModal({ 
   isOpen, 
@@ -132,7 +133,7 @@ export default function CollectionSelectionModal({
         <div className="p-6 border-b border-gray-200 dark:border-gray-700">
           <div className="flex items-center justify-between mb-4">
             <h2 className="text-2xl font-bold text-gray-900 dark:text-white">
-              Add to Collections
+              {VOCAB.ADD_TO_LIST}s
             </h2>
             <button
               onClick={onClose}
@@ -175,7 +176,7 @@ export default function CollectionSelectionModal({
                 {cards.length} card{cards.length !== 1 ? 's' : ''} selected
               </p>
               <p className="text-sm text-gray-600 dark:text-gray-400">
-                Choose collections to add {cards.length === 1 ? 'this card' : 'these cards'} to
+                Choose lists to add {cards.length === 1 ? 'this card' : 'these cards'} to
               </p>
             </div>
           </div>
@@ -184,7 +185,7 @@ export default function CollectionSelectionModal({
           <div className="relative">
             <input
               type="text"
-              placeholder="Search collections..."
+              placeholder="Search lists..."
               value={searchQuery}
               onChange={(e) => setSearchQuery(e.target.value)}
               className="w-full px-4 py-2 pl-10 border border-gray-300 dark:border-gray-600 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent bg-white dark:bg-gray-700 text-gray-900 dark:text-white"
@@ -200,7 +201,7 @@ export default function CollectionSelectionModal({
           {loading ? (
             <div className="p-8 text-center">
               <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-blue-600 mx-auto mb-2"></div>
-              <p className="text-gray-600 dark:text-gray-400">Loading collections...</p>
+              <p className="text-gray-600 dark:text-gray-400">Loading lists...</p>
             </div>
           ) : filteredCollections.length === 0 ? (
             <div className="p-8 text-center">
@@ -208,10 +209,10 @@ export default function CollectionSelectionModal({
                 <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10" />
               </svg>
               <p className="text-gray-600 dark:text-gray-400 mb-2">
-                {searchQuery ? 'No collections match your search' : 'No collections found'}
+                {searchQuery ? 'No lists match your search' : 'No lists found'}
               </p>
               <p className="text-sm text-gray-500 dark:text-gray-500">
-                {searchQuery ? 'Try a different search term' : 'Create your first collection to get started'}
+                {searchQuery ? 'Try a different search term' : 'Create your first list to get started'}
               </p>
             </div>
           ) : (
@@ -305,7 +306,7 @@ export default function CollectionSelectionModal({
             <div className="text-sm text-gray-600 dark:text-gray-400">
               {selectedCollections.length > 0 && (
                 <span>
-                  {selectedCollections.length} collection{selectedCollections.length !== 1 ? 's' : ''} selected
+                  {selectedCollections.length} list{selectedCollections.length !== 1 ? 's' : ''} selected
                 </span>
               )}
             </div>
@@ -332,7 +333,7 @@ export default function CollectionSelectionModal({
                     <span>Adding...</span>
                   </div>
                 ) : (
-                  `Add to ${selectedCollections.length} Collection${selectedCollections.length !== 1 ? 's' : ''}`
+                  `Add to ${selectedCollections.length} List${selectedCollections.length !== 1 ? 's' : ''}`
                 )}
               </button>
             </div>
diff --git a/components/Layout.js b/components/Layout.js
index 84a14fa..99d73f4 100644
--- a/components/Layout.js
+++ b/components/Layout.js
@@ -176,7 +176,7 @@ function NavigationContent({ user, router, onItemClick }) {
     active: router.pathname === '/dashboard' || router.pathname === '/collections' || router.pathname === '/my-cards' || router.pathname === '/decks' || router.pathname === '/analytics',
     expanded: true,
     items: [
-      { name: 'Collections', href: '/collections', active: router.pathname === '/collections' },
+      { name: 'Lists', href: '/collections', active: router.pathname === '/collections' },
       { name: 'Cards', href: '/my-cards', active: router.pathname === '/my-cards' },
       { name: 'Decks', href: '/decks', active: router.pathname === '/decks' },
       { name: 'Analytics', href: '/analytics', active: router.pathname === '/analytics', isPlaceholder: true }
@@ -201,7 +201,7 @@ function NavigationContent({ user, router, onItemClick }) {
     active: router.pathname.startsWith('/community'),
     expanded: isCommunityExpanded,
     items: [
-      { name: 'Collections', href: '/community/collections', active: router.pathname === '/community/collections' },
+      { name: 'Lists', href: '/community/collections', active: router.pathname === '/community/collections' },
       { name: 'Decks', href: '/community/decks', active: router.pathname === '/community/decks' },
       { name: 'Forums', href: '/community/forums', active: router.pathname === '/community/forums' }
     ]
diff --git a/components/ScannedCardItem.js b/components/ScannedCardItem.js
index 292ee66..e43781e 100644
--- a/components/ScannedCardItem.js
+++ b/components/ScannedCardItem.js
@@ -1,4 +1,5 @@
 import { useEffect, useState } from 'react';
+import { formatProcessedDestination, VOCAB } from '../lib/collection-vocabulary.js';
 
 export const CONDITION_OPTIONS = ['NM', 'LP', 'MP', 'HP', 'DMG'];
 
@@ -223,7 +224,7 @@ export default function ScannedCardItem({
                 style={{ backgroundColor: 'var(--accent-gold)', color: 'white' }}
               >
                 <span aria-hidden="true">💎 </span>
-                {isAdding ? 'Adding…' : 'Mark Owned'}
+                {isAdding ? 'Adding…' : VOCAB.ADD_TO_MY_COLLECTION}
               </button>
               <button
                 type="button"
@@ -251,9 +252,9 @@ export default function ScannedCardItem({
                     border: '1px solid var(--border)',
                   }}
                   defaultValue=""
-                  aria-label={`Add ${card.name} to a collection`}
+                  aria-label={`Add ${card.name} to a list`}
                 >
-                  <option value="">📚 Add to Collection</option>
+                  <option value="">{`📚 ${VOCAB.ADD_TO_LIST}`}</option>
                   {collections.map((collection) => (
                     <option key={collection.id} value={collection.id}>
                       {collection.name}
@@ -291,7 +292,7 @@ export default function ScannedCardItem({
         ) : (
           <div className="text-sm flex items-center gap-2" style={{ color: 'var(--accent-ember)' }}>
             <span aria-hidden="true">✅</span>
-            <span>Added to {card.processedAction}</span>
+            <span>Added to {formatProcessedDestination(card.processedAction)}</span>
           </div>
         )}
       </div>
diff --git a/components/ScannerDestinationPicker.js b/components/ScannerDestinationPicker.js
index 617b8a4..1540098 100644
--- a/components/ScannerDestinationPicker.js
+++ b/components/ScannerDestinationPicker.js
@@ -1,3 +1,5 @@
+import { VOCAB } from '../lib/collection-vocabulary.js';
+
 const GAME_OPTIONS = [
   { value: 'All', label: 'All games' },
   { value: 'MTG', label: 'Magic' },
@@ -30,7 +32,7 @@ export default function ScannerDestinationPicker({
 
   const handleTypeChange = (type) => {
     if (type === 'owned') {
-      onDestinationChange({ type: 'owned', id: null, label: 'My owned cards' });
+      onDestinationChange({ type: 'owned', id: null, label: VOCAB.MY_COLLECTION });
       return;
     }
     if (type === 'collection' && filteredCollections.length > 0) {
@@ -122,8 +124,8 @@ export default function ScannerDestinationPicker({
           <fieldset className="flex flex-wrap gap-2" disabled={disabled}>
             <legend className="sr-only">Destination type</legend>
             {[
-              { type: 'owned', label: '💎 Owned' },
-              { type: 'collection', label: '📚 Collection' },
+              { type: 'owned', label: `💎 ${VOCAB.MY_COLLECTION}` },
+              { type: 'collection', label: `📚 ${VOCAB.LIST}` },
               { type: 'deck', label: '🃏 Deck' },
             ].map((option) => {
               const isActive = destination?.type === option.type;
@@ -154,7 +156,7 @@ export default function ScannerDestinationPicker({
 
       {destination?.type === 'collection' && filteredCollections.length > 0 && (
         <label className="flex flex-col gap-1 mt-4 text-sm">
-          <span style={{ color: 'var(--text-secondary)' }}>Collection</span>
+          <span style={{ color: 'var(--text-secondary)' }}>{VOCAB.LIST}</span>
           <select
             value={String(destination.id)}
             onChange={handleTargetChange}
diff --git a/docs/SCHEMA_MAP.md b/docs/SCHEMA_MAP.md
index e346099..90f491a 100644
--- a/docs/SCHEMA_MAP.md
+++ b/docs/SCHEMA_MAP.md
@@ -23,8 +23,8 @@
 | --- | --- | --- |
 | **Identity** | `users`, `user_settings`, `user_avatars` | Accounts, profile, preferences |
 | **Catalog** | `cards` | Master card list across MTG / Pokémon / Lorcana |
-| **Ownership** | `user_cards`, `user_favorites` | What a user owns / has favorited |
-| **Collections** | `collections`, `collection_cards`, `collection_permissions`, `collection_activity` | Curated card lists with sharing |
+| **Ownership** | `user_cards`, `user_favorites` | What a user owns / has favorited (UI: **My Collection**) |
+| **Collections** | `collections`, `collection_cards`, `collection_permissions`, `collection_activity` | Curated card lists with sharing (UI: **Lists**) |
 | **Decks** | `decks`, `deck_cards` | Playable deck definitions |
 | **Scanning** | `card_submissions`, `scan_attempts` | Unknown-card review queue + scan telemetry |
 | **Invitations** | `invitations` (referenced; verify) | Pending share requests |
@@ -124,7 +124,7 @@
 | `visibility` | `VARCHAR(20)` default `'private'` | **Coexists with `is_public`; verify single source of truth** |
 | `tcg` | `VARCHAR(50)` default `'MTG'` | |
 | `tags` | `TEXT` | Comma-separated; consider migrating to JSONB array |
-| `is_system_collection` | `BOOLEAN` default `false` | E.g. "All My Cards" auto-collection |
+| `is_system_collection` | `BOOLEAN` default `false` | Auto-sync list; DB name `'All My Cards'` (internal — UI: **Synced binder** via `collectionDisplayName()`) |
 | `created_at`, `updated_at` | `TIMESTAMP` | |
 
 ### collection_cards
diff --git a/lib/collection-vocabulary.js b/lib/collection-vocabulary.js
new file mode 100644
index 0000000..2875e36
--- /dev/null
+++ b/lib/collection-vocabulary.js
@@ -0,0 +1,39 @@
+/**
+ * Product vocabulary — ownership vs curated lists.
+ * See AGENTS.md § Product vocabulary and docs/SCHEMA_MAP.md glossary.
+ */
+
+/** Internal DB name for the auto-sync system collection — never render in UI. */
+export const SYSTEM_COLLECTION_DB_NAME = 'All My Cards';
+
+export const VOCAB = {
+  MY_COLLECTION: 'My Collection',
+  LISTS: 'Lists',
+  LIST: 'List',
+  ADD_TO_MY_COLLECTION: 'Add to My Collection',
+  REMOVE_FROM_MY_COLLECTION: 'Remove from My Collection',
+  ADD_TO_LIST: 'Add to List',
+  SYNCED_BINDER: 'Synced binder',
+  SYSTEM_COLLECTION_SYNC_HINT: 'Automatically syncs with My Collection',
+};
+
+/** User-facing label for a collection row (maps system collection DB name). */
+export function collectionDisplayName(collection) {
+  if (!collection) return '';
+  if (
+    collection.isSystemCollection ||
+    collection.is_system_collection ||
+    collection.name === SYSTEM_COLLECTION_DB_NAME
+  ) {
+    return VOCAB.SYNCED_BINDER;
+  }
+  return collection.name;
+}
+
+/** Scanner / bulk-action success line: "Added to …" */
+export function formatProcessedDestination(action) {
+  if (action === 'owned') return VOCAB.MY_COLLECTION;
+  if (action === 'collection') return VOCAB.LIST;
+  if (action === 'deck') return 'deck';
+  return action;
+}
diff --git a/pages/card/[id].js b/pages/card/[id].js
index 8de8bc8..b9099c3 100644
--- a/pages/card/[id].js
+++ b/pages/card/[id].js
@@ -5,6 +5,7 @@ import { useAuth } from '../../lib/use-auth';
 import CollectionSelectionModal from '../../components/CollectionSelectionModal';
 import { ManaCost, ColorIdentity, AdvancedManaCost } from '../../components/ManaSymbols';
 import ManaSymbolSettings from '../../components/ManaSymbolSettings';
+import { VOCAB } from '../../lib/collection-vocabulary.js';
 
 export default function CardDetail() {
   const router = useRouter();
@@ -468,7 +469,7 @@ export default function CardDetail() {
                     <div className="flex items-center gap-2">
                       {ownedQuantity > 0 && (
                         <span className="px-3 py-1 rounded-full text-sm font-medium bg-green-500 bg-opacity-80">
-                          Owned ({ownedQuantity})
+                          In {VOCAB.MY_COLLECTION} ({ownedQuantity})
                         </span>
                       )}
                       <button
@@ -489,14 +490,14 @@ export default function CardDetail() {
                       className="px-4 py-2 rounded-xl font-medium bg-white bg-opacity-20 backdrop-blur-sm hover:bg-opacity-30 transition-all duration-200 flex items-center gap-2"
                     >
                       <span>📦</span>
-                      {ownedQuantity > 0 ? 'Update Quantity' : 'Mark as Owned'}
+                      {ownedQuantity > 0 ? 'Update Quantity' : VOCAB.ADD_TO_MY_COLLECTION}
                     </button>
                     <button
                       onClick={() => setShowCollectionModal(true)}
                       className="px-4 py-2 rounded-xl font-medium bg-white bg-opacity-20 backdrop-blur-sm hover:bg-opacity-30 transition-all duration-200 flex items-center gap-2"
                     >
                       <span>📁</span>
-                      Add to Collection
+                      {VOCAB.ADD_TO_LIST}
                     </button>
                     <button
                       onClick={() => setShowDeckModal(true)}
@@ -759,7 +760,7 @@ export default function CardDetail() {
         <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
           <div className="bg-white rounded-2xl p-6 max-w-md w-full mx-4" style={{ backgroundColor: 'var(--bg-primary)' }}>
             <h3 className="text-xl font-bold mb-4" style={{ color: 'var(--text-primary)' }}>
-              {ownedQuantity > 0 ? 'Update Quantity' : 'Mark as Owned'}
+              {ownedQuantity > 0 ? 'Update Quantity' : VOCAB.ADD_TO_MY_COLLECTION}
             </h3>
             <div className="mb-6">
               <label className="block text-sm font-medium mb-2" style={{ color: 'var(--text-primary)' }}>
@@ -798,7 +799,7 @@ export default function CardDetail() {
                 onClick={() => handleOwnershipUpdate(quantity)}
                 className="flex-1 px-4 py-2 rounded-xl font-medium gradient-bg-purple text-white hover:shadow-lg transition-all duration-200"
               >
-                {ownedQuantity > 0 ? 'Update' : 'Mark as Owned'}
+                {ownedQuantity > 0 ? 'Update' : VOCAB.ADD_TO_MY_COLLECTION}
               </button>
               <button
                 onClick={() => setShowQuantityModal(false)}
diff --git a/pages/cards.js b/pages/cards.js
index 617debd..9726a27 100644
--- a/pages/cards.js
+++ b/pages/cards.js
@@ -9,6 +9,7 @@ import ProtectedRoute from '../components/ProtectedRoute';
 import { ManaCost, ColorFilterSymbol } from '../components/ManaSymbols';
 import ManaSymbolSettings from '../components/ManaSymbolSettings';
 import { useAuth } from '../lib/use-auth';
+import { VOCAB } from '../lib/collection-vocabulary.js';
 
 // Public fallback component for non-authenticated users
 function PublicCardsView() {
@@ -461,7 +462,7 @@ function AuthenticatedCards() {
     try {
       const token = localStorage.getItem('auth_token');
       if (!token) {
-        alert('Please log in to mark cards as owned');
+        alert(`Please log in to ${VOCAB.ADD_TO_MY_COLLECTION.toLowerCase()}`);
         return;
       }
 
@@ -486,16 +487,16 @@ function AuthenticatedCards() {
       }
 
       if (successCount === cards.length) {
-        alert(`Successfully marked ${cards.length} cards as owned!`);
+        alert(`Successfully added ${cards.length} cards to ${VOCAB.MY_COLLECTION}!`);
       } else {
-        alert(`Marked ${successCount} out of ${cards.length} cards as owned. Some operations may have failed.`);
+        alert(`Added ${successCount} out of ${cards.length} cards to ${VOCAB.MY_COLLECTION}. Some operations may have failed.`);
       }
 
       // Clear selection after successful operation
       setSelectedCards([]);
     } catch (error) {
       console.error('Error in bulk mark as owned:', error);
-      alert('Failed to mark cards as owned. Please try again.');
+      alert(`Failed to add cards to ${VOCAB.MY_COLLECTION}. Please try again.`);
     }
   };
 
@@ -503,7 +504,7 @@ function AuthenticatedCards() {
     try {
       const token = localStorage.getItem('auth_token');
       if (!token) {
-        alert('Please log in to remove cards from owned');
+        alert(`Please log in to ${VOCAB.REMOVE_FROM_MY_COLLECTION.toLowerCase()}`);
         return;
       }
 
@@ -528,16 +529,16 @@ function AuthenticatedCards() {
       }
 
       if (successCount === cards.length) {
-        alert(`Successfully removed ${cards.length} cards from owned!`);
+        alert(`Successfully removed ${cards.length} cards from ${VOCAB.MY_COLLECTION}!`);
       } else {
-        alert(`Removed ${successCount} out of ${cards.length} cards from owned. Some operations may have failed.`);
+        alert(`Removed ${successCount} out of ${cards.length} cards from ${VOCAB.MY_COLLECTION}. Some operations may have failed.`);
       }
 
       // Clear selection after successful operation
       setSelectedCards([]);
     } catch (error) {
       console.error('Error in bulk remove from owned:', error);
-      alert('Failed to remove cards from owned. Please try again.');
+      alert(`Failed to remove cards from ${VOCAB.MY_COLLECTION}. Please try again.`);
     }
   };
 
@@ -582,7 +583,7 @@ function AuthenticatedCards() {
     const totalAttempts = results.length;
     
     if (successCount === totalAttempts) {
-      alert(`Successfully added ${cards.length} card${cards.length !== 1 ? 's' : ''} to ${selectedCollectionIds.length} collection${selectedCollectionIds.length !== 1 ? 's' : ''}!`);
+      alert(`Successfully added ${cards.length} card${cards.length !== 1 ? 's' : ''} to ${selectedCollectionIds.length} list${selectedCollectionIds.length !== 1 ? 's' : ''}!`);
     } else {
       alert(`Added ${successCount} out of ${totalAttempts} cards. Some additions may have failed.`);
     }
@@ -1459,7 +1460,7 @@ function Card3D({ card, viewMode, getRarityLabel, getRarityColor }) {
                   )}
                   {card.collections && card.collections.length > 0 && (
                     <div>
-                      <span className="font-semibold">Collections:</span> {card.collections.join(', ')}
+                      <span className="font-semibold">{VOCAB.LISTS}:</span> {card.collections.join(', ')}
                     </div>
                   )}
                 </div>
diff --git a/pages/collection/[identifier].js b/pages/collection/[identifier].js
index 24a8c4b..05f548d 100644
--- a/pages/collection/[identifier].js
+++ b/pages/collection/[identifier].js
@@ -10,6 +10,7 @@ import LoginCTA from '../../components/LoginCTA';
 import { ManaCost, ColorFilterSymbol } from '../../components/ManaSymbols';
 import ManaSymbolSettings from '../../components/ManaSymbolSettings';
 import { useAuth } from '../../lib/use-auth';
+import { VOCAB, collectionDisplayName } from '../../lib/collection-vocabulary.js';
 
 export default function CollectionView() {
   const router = useRouter();
@@ -518,11 +519,11 @@ export default function CollectionView() {
         <div className="flex items-center justify-center min-h-screen">
           <div className="text-center">
             <h2 className="text-2xl font-bold mb-4" style={{ color: 'var(--text-primary)' }}>
-              Collection not found
+              List not found
             </h2>
             <Link href="/collections">
               <button className="px-4 py-2 rounded-lg text-white" style={{ backgroundColor: 'var(--accent-ember)' }}>
-                Back to Collections
+                Back to Lists
               </button>
             </Link>
           </div>
@@ -594,7 +595,7 @@ export default function CollectionView() {
           <div className="mb-6">
             <div className="flex items-center space-x-3 mb-2">
               <h1 className="text-3xl font-bold" style={{ color: 'var(--text-primary)' }}>
-                {collection.name}
+                {collectionDisplayName(collection)}
               </h1>
               {/* System collection indicator */}
               {collection.isSystemCollection && (
@@ -607,7 +608,7 @@ export default function CollectionView() {
                       <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
                     </svg>
                     <div className="absolute bottom-full left-1/2 transform -translate-x-1/2 mb-2 px-3 py-2 text-xs bg-gray-900 text-white rounded-lg shadow-lg opacity-0 group-hover:opacity-100 transition-opacity z-10 whitespace-nowrap">
-                      Automatically syncs with your owned cards
+                      {VOCAB.SYSTEM_COLLECTION_SYNC_HINT}
                       <div className="absolute top-full left-1/2 transform -translate-x-1/2 border-4 border-transparent border-t-gray-900"></div>
                     </div>
                   </div>
@@ -851,7 +852,7 @@ export default function CollectionView() {
             <div className="text-center py-12">
               <div className="text-6xl mb-4">🃏</div>
               <h3 className="text-xl font-semibold mb-2" style={{ color: 'var(--text-primary)' }}>
-                Start Building Your Collection
+                Start Building Your List
               </h3>
               <p className="mb-6" style={{ color: 'var(--text-secondary)' }}>
                 Add cards to get started with your collection
@@ -894,12 +895,12 @@ export default function CollectionView() {
           <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
             <div className="card max-w-md w-full mx-4">
               <h2 className="text-2xl font-bold mb-4" style={{ color: 'var(--text-primary)' }}>
-                Edit Collection
+                Edit List
               </h2>
               <div className="space-y-4">
                 <div>
                   <label className="block text-sm font-medium mb-2" style={{ color: 'var(--text-primary)' }}>
-                    Collection Name
+                    List Name
                   </label>
                   <input
                     type="text"
@@ -936,7 +937,7 @@ export default function CollectionView() {
                 <div className="flex items-center justify-between p-4 rounded-lg border" style={{ borderColor: 'var(--border)' }}>
                   <div>
                     <label className="text-sm font-medium" style={{ color: 'var(--text-primary)' }}>
-                      Public Collection
+                      Public List
                     </label>
                     <p className="text-xs mt-1" style={{ color: 'var(--text-secondary)' }}>
                       Make this collection discoverable by other users
@@ -989,10 +990,10 @@ export default function CollectionView() {
           <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
             <div className="card max-w-md w-full mx-4">
               <h2 className="text-2xl font-bold mb-4" style={{ color: 'var(--text-primary)' }}>
-                Delete Collection
+                Delete List
               </h2>
               <p className="mb-6" style={{ color: 'var(--text-secondary)' }}>
-                Are you sure you want to delete "{collection.name}"? This action cannot be undone and will permanently remove all cards and data associated with this collection.
+                Are you sure you want to delete "{collectionDisplayName(collection)}"? This action cannot be undone and will permanently remove all cards and data associated with this list.
               </p>
               <div className="flex space-x-3">
                 <button
@@ -1009,7 +1010,7 @@ export default function CollectionView() {
                   onClick={handleDeleteCollection}
                   className="flex-1 py-2 px-4 rounded-xl font-medium transition-all duration-200 hover:shadow-md bg-red-600 text-white hover:bg-red-700"
                 >
-                  Delete Collection
+                  Delete List
                 </button>
               </div>
             </div>
diff --git a/pages/collections.js b/pages/collections.js
index 41e46a9..1b93f50 100644
--- a/pages/collections.js
+++ b/pages/collections.js
@@ -4,6 +4,7 @@ import Layout from '../components/Layout';
 import PermissionIndicator from '../components/PermissionIndicator';
 import { useAuth } from '../lib/use-auth';
 import Link from 'next/link';
+import { VOCAB, collectionDisplayName } from '../lib/collection-vocabulary.js';
 
 export default function Collections() {
   const router = useRouter();
@@ -154,7 +155,7 @@ export default function Collections() {
         fetchCollections();
       } else {
         const error = await response.json();
-        alert(error.error || 'Failed to create collection');
+        alert(error.error || 'Failed to create list');
       }
     } catch (error) {
       console.error('Error creating collection:', error);
@@ -185,7 +186,7 @@ export default function Collections() {
         setEditTagInput(''); // Clear the tag input
       } else {
         const error = await response.json();
-        alert(error.error || 'Failed to update collection');
+        alert(error.error || 'Failed to update list');
       }
     } catch (error) {
       console.error('Error updating collection:', error);
@@ -194,7 +195,7 @@ export default function Collections() {
   };
 
   const handleDeleteCollection = async (collectionId) => {
-    if (confirm('Are you sure you want to delete this collection? This action cannot be undone.')) {
+    if (confirm('Are you sure you want to delete this list? This action cannot be undone.')) {
       try {
         const response = await fetch(`/api/collections/${collectionId}`, {
           method: 'DELETE'
@@ -204,7 +205,7 @@ export default function Collections() {
           fetchCollections(); // Refresh the list
         } else {
           const error = await response.json();
-          alert(error.error || 'Failed to delete collection');
+          alert(error.error || 'Failed to delete list');
         }
       } catch (error) {
         console.error('Error deleting collection:', error);
@@ -388,10 +389,10 @@ export default function Collections() {
         <div className="flex items-center justify-between">
           <div>
             <h1 className="text-3xl font-bold" style={{ color: 'var(--text-primary)' }}>
-              My Collections
+              {VOCAB.LISTS}
             </h1>
             <p className="mt-2" style={{ color: 'var(--text-secondary)' }}>
-              Collections you own, collaborate on, or have been shared with you
+              Lists you own, collaborate on, or have been shared with you
             </p>
           </div>
           <div className="flex gap-3">
@@ -414,7 +415,7 @@ export default function Collections() {
                 color: 'white'
               }}
             >
-              + Create Collection
+              + Create List
             </button>
           </div>
         </div>
@@ -426,7 +427,7 @@ export default function Collections() {
           <div className="flex-1">
             <input
               type="text"
-              placeholder="Search collections..."
+              placeholder="Search lists..."
               className="input-field w-full"
               value={searchQuery}
               onChange={(e) => setSearchQuery(e.target.value)}
@@ -454,12 +455,12 @@ export default function Collections() {
           <div className="text-center py-12">
             <div className="text-6xl mb-4">📦</div>
             <h3 className="text-xl font-semibold mb-2" style={{ color: 'var(--text-primary)' }}>
-              {searchQuery ? 'No collections found' : 'No collections yet'}
+              {searchQuery ? 'No lists found' : 'No lists yet'}
             </h3>
             <p className="mb-6" style={{ color: 'var(--text-secondary)' }}>
               {searchQuery 
                 ? 'Try adjusting your search terms'
-                : 'Create your first collection to get started'
+                : 'Create your first list to get started'
               }
             </p>
             {!searchQuery && (
@@ -471,7 +472,7 @@ export default function Collections() {
                   color: 'white'
                 }}
               >
-                Create Collection
+                Create List
               </button>
             )}
           </div>
@@ -493,7 +494,7 @@ export default function Collections() {
                     <div className="flex items-start justify-between">
                       <div className="flex items-center space-x-2">
                         <h3 className="text-lg font-semibold leading-tight" style={{ color: 'var(--text-primary)' }}>
-                          {collection.name}
+                          {collectionDisplayName(collection)}
                         </h3>
                         {/* System collection indicator */}
                         {collection.isSystemCollection && (
@@ -506,7 +507,7 @@ export default function Collections() {
                                 <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
                               </svg>
                               <div className="absolute bottom-full left-1/2 transform -translate-x-1/2 mb-2 px-3 py-2 text-xs bg-gray-900 text-white rounded-lg shadow-lg opacity-0 group-hover:opacity-100 transition-opacity z-10 whitespace-nowrap">
-                                Automatically syncs with your owned cards
+                                {VOCAB.SYSTEM_COLLECTION_SYNC_HINT}
                                 <div className="absolute top-full left-1/2 transform -translate-x-1/2 border-4 border-transparent border-t-gray-900"></div>
                               </div>
                             </div>
@@ -638,19 +639,19 @@ export default function Collections() {
         <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
           <div className="card max-w-md w-full mx-4">
             <h2 className="text-2xl font-bold mb-4" style={{ color: 'var(--text-primary)' }}>
-              Create New Collection
+              Create New List
             </h2>
             <div className="space-y-4">
               <div>
                 <label className="block text-sm font-medium mb-2" style={{ color: 'var(--text-primary)' }}>
-                  Collection Name
+                  List Name
                 </label>
                 <input
                   type="text"
                   className="input-field w-full"
                   value={newCollection.name}
                   onChange={(e) => setNewCollection({...newCollection, name: e.target.value})}
-                  placeholder="Enter collection name"
+                  placeholder="Enter list name"
                 />
               </div>
               <div>
@@ -662,7 +663,7 @@ export default function Collections() {
                   rows="3"
                   value={newCollection.description}
                   onChange={(e) => setNewCollection({...newCollection, description: e.target.value})}
-                  placeholder="Describe your collection"
+                  placeholder="Describe your list"
                 />
               </div>
               <div>
@@ -734,7 +735,7 @@ export default function Collections() {
                     </div>
                   )}
                   <p className="text-xs" style={{ color: 'var(--text-secondary)' }}>
-                    Add tags to help organize and categorize your collection
+                    Add tags to help organize and categorize your list
                   </p>
                 </div>
               </div>
@@ -742,10 +743,10 @@ export default function Collections() {
               <div className="flex items-center justify-between p-4 rounded-lg border" style={{ borderColor: 'var(--border)' }}>
                 <div>
                   <label className="text-sm font-medium" style={{ color: 'var(--text-primary)' }}>
-                    Public Collection
+                    Public List
                   </label>
                   <p className="text-xs mt-1" style={{ color: 'var(--text-secondary)' }}>
-                    Make this collection discoverable by other users
+                    Make this list discoverable by other users
                   </p>
                 </div>
                 <button
@@ -786,7 +787,7 @@ export default function Collections() {
                   color: 'white'
                 }}
               >
-                Create Collection
+                Create List
               </button>
             </div>
           </div>
@@ -799,10 +800,10 @@ export default function Collections() {
           <div className="card max-w-md w-full mx-4 text-center">
             <div className="text-6xl mb-4">🎉</div>
             <h2 className="text-2xl font-bold mb-4" style={{ color: 'var(--text-primary)' }}>
-              Collection Created!
+              List Created!
             </h2>
             <p className="mb-6" style={{ color: 'var(--text-secondary)' }}>
-              Your collection "{createdCollection.name}" has been created successfully.
+              Your list "{createdCollection.name}" has been created successfully.
             </p>
             <div className="space-y-3">
               <button
@@ -816,7 +817,7 @@ export default function Collections() {
                   color: 'white'
                 }}
               >
-                View Collection
+                View List
               </button>
               <button
                 onClick={() => setShowSuccessModal(false)}
@@ -826,7 +827,7 @@ export default function Collections() {
                   color: 'var(--text-secondary)' 
                 }}
               >
-                Stay on Collections Page
+                Stay on Lists Page
               </button>
             </div>
           </div>
@@ -838,12 +839,12 @@ export default function Collections() {
         <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
           <div className="card max-w-md w-full mx-4">
             <h2 className="text-2xl font-bold mb-4" style={{ color: 'var(--text-primary)' }}>
-              Edit Collection
+              Edit List
             </h2>
             <div className="space-y-4">
               <div>
                 <label className="block text-sm font-medium mb-2" style={{ color: 'var(--text-primary)' }}>
-                  Collection Name
+                  List Name
                 </label>
                 <input
                   type="text"
@@ -934,10 +935,10 @@ export default function Collections() {
               <div className="flex items-center justify-between p-4 rounded-lg border" style={{ borderColor: 'var(--border)' }}>
                 <div>
                   <label className="text-sm font-medium" style={{ color: 'var(--text-primary)' }}>
-                    Public Collection
+                    Public List
                   </label>
                   <p className="text-xs mt-1" style={{ color: 'var(--text-secondary)' }}>
-                    Make this collection discoverable by other users
+                    Make this list discoverable by other users
                   </p>
                 </div>
                 <button
@@ -978,7 +979,7 @@ export default function Collections() {
                   color: 'white'
                 }}
               >
-                Update Collection
+                Update List
               </button>
             </div>
           </div>
diff --git a/pages/community/collections.js b/pages/community/collections.js
index 72f767c..6026ef0 100644
--- a/pages/community/collections.js
+++ b/pages/community/collections.js
@@ -198,7 +198,7 @@ export default function CommunityCollections() {
         <div className="flex items-center justify-between">
           <div>
             <h1 className="text-3xl font-bold" style={{ color: 'var(--text-primary)' }}>
-              Community Collections
+              Community Lists
             </h1>
             <p className="mt-2" style={{ color: 'var(--text-secondary)' }}>
               Discover public collections shared by the community
@@ -255,7 +255,7 @@ export default function CommunityCollections() {
                     color: 'white'
                   }}
                 >
-                  Go to My Collections
+                  Go to My Lists
                 </button>
               </Link>
             )}
diff --git a/pages/dashboard.js b/pages/dashboard.js
index 8ba0f8f..a8cef08 100644
--- a/pages/dashboard.js
+++ b/pages/dashboard.js
@@ -4,6 +4,7 @@ import Layout from '../components/Layout';
 import PermissionIndicator from '../components/PermissionIndicator';
 import { useAuth } from '../lib/use-auth';
 import Link from 'next/link';
+import { VOCAB } from '../lib/collection-vocabulary.js';
 
 export default function Dashboard() {
   const router = useRouter();
@@ -79,7 +80,7 @@ export default function Dashboard() {
         <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4">
           <div>
             <h1 className="text-2xl sm:text-3xl font-bold mb-2" style={{ color: 'var(--text-primary)' }}>
-              My Collections
+              {VOCAB.LISTS}
             </h1>
             <p className="text-base sm:text-lg" style={{ color: 'var(--text-secondary)' }}>
               Manage your collection of trading cards and decks
@@ -92,7 +93,7 @@ export default function Dashboard() {
                   <svg className="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                     <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 6v6m0 0v6m0-6h6m-6 0H6" />
                   </svg>
-                  <span>Create Collection</span>
+                  <span>Create List</span>
                 </div>
               </button>
             </Link>
@@ -119,7 +120,7 @@ export default function Dashboard() {
                   </div>
                   <div>
                     <p className="text-2xl font-bold" style={{ color: 'var(--text-primary)' }}>{collections.length}</p>
-                    <p className="text-sm" style={{ color: 'var(--text-secondary)' }}>Collections</p>
+                    <p className="text-sm" style={{ color: 'var(--text-secondary)' }}>Lists</p>
                   </div>
                 </div>
               </div>
@@ -159,7 +160,7 @@ export default function Dashboard() {
 
             {/* Collections Grid */}
             <div className="mb-6">
-              <h2 className="text-xl font-bold mb-4" style={{ color: 'var(--text-primary)' }}>Recent Collections</h2>
+              <h2 className="text-xl font-bold mb-4" style={{ color: 'var(--text-primary)' }}>Recent Lists</h2>
               {collections.length === 0 ? (
                 <div className="text-center py-12">
                   <div className="w-16 h-16 mx-auto mb-4 rounded-2xl flex items-center justify-center" style={{ backgroundColor: 'var(--bg-secondary)' }}>
@@ -167,13 +168,13 @@ export default function Dashboard() {
                       <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10" />
                     </svg>
                   </div>
-                  <h3 className="text-lg font-semibold mb-2" style={{ color: 'var(--text-primary)' }}>No Collections Yet</h3>
+                  <h3 className="text-lg font-semibold mb-2" style={{ color: 'var(--text-primary)' }}>No Lists Yet</h3>
                   <p className="mb-4" style={{ color: 'var(--text-secondary)' }}>
                     Create your first collection to start organizing your cards
                   </p>
                   <Link href="/collections">
                     <button className="px-6 py-3 font-medium rounded-xl transition-all duration-200 hover:opacity-90" style={{ backgroundColor: 'var(--accent-ember)', color: 'white' }}>
-                      Create Your First Collection
+                      Create Your First List
                     </button>
                   </Link>
                 </div>
@@ -219,7 +220,7 @@ export default function Dashboard() {
               <div className="text-center">
                 <Link href="/collections">
                   <button className="px-6 py-3 font-medium rounded-xl border-2 transition-all duration-200 hover:opacity-80" style={{ color: 'var(--text-primary)', borderColor: 'var(--accent-ember)' }}>
-                    View All Collections
+                    View All Lists
                   </button>
                 </Link>
               </div>
diff --git a/pages/index.js b/pages/index.js
index 03a6724..5388c54 100644
--- a/pages/index.js
+++ b/pages/index.js
@@ -118,7 +118,7 @@ export default function Home() {
                 borderColor: 'var(--accent-ember)'
               }}
             >
-              Explore Collections
+              Explore Lists
             </Link>
           </div>
         </div>
@@ -137,7 +137,7 @@ export default function Home() {
                   <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10" />
                 </svg>
               </div>
-              <h3 className="text-xl font-bold mb-4 gradient-text-flame">Organize Collections</h3>
+              <h3 className="text-xl font-bold mb-4 gradient-text-flame">Organize Lists</h3>
               <p style={{ color: 'var(--text-secondary)' }}>
                 Create custom collections, track card values, and organize by sets, rarity, or any system that works for you.
               </p>
@@ -173,7 +173,7 @@ export default function Home() {
         <div className="max-w-6xl mx-auto">
           <div className="text-center mb-16">
             <h2 className="text-4xl font-bold mb-4 gradient-text-flame">
-              Featured Collections
+              Featured Lists
             </h2>
             <p className="text-xl" style={{ color: 'var(--text-secondary)' }}>
               Discover amazing collections from our community
@@ -247,7 +247,7 @@ export default function Home() {
                 border: '2px solid var(--accent-ember)'
               }}
             >
-              View All Collections
+              View All Lists
               <svg className="w-5 h-5 ml-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                 <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M17 8l4 4m0 0l-4 4m4-4H3" />
               </svg>
diff --git a/pages/invite/accept.js b/pages/invite/accept.js
index 56907c5..6644a3d 100644
--- a/pages/invite/accept.js
+++ b/pages/invite/accept.js
@@ -76,7 +76,7 @@ export default function AcceptInvite() {
                   onClick={() => router.push(`/collection/${result.collection.id}`)}
                   className="w-full px-6 py-3 rounded-lg font-medium gradient-bg-purple text-white hover:shadow-lg transform hover:scale-105 transition-all duration-200"
                 >
-                  View Collection
+                  View List
                 </button>
                 <button
                   onClick={() => router.push('/collections')}
@@ -86,7 +86,7 @@ export default function AcceptInvite() {
                     color: 'var(--text-primary)'
                   }}
                 >
-                  View All Collections
+                  View All Lists
                 </button>
               </div>
             </div>
@@ -104,7 +104,7 @@ export default function AcceptInvite() {
                   onClick={() => router.push('/collections')}
                   className="w-full px-6 py-3 rounded-lg font-medium gradient-bg-purple text-white hover:shadow-lg transform hover:scale-105 transition-all duration-200"
                 >
-                  Browse Collections
+                  Browse Lists
                 </button>
                 <button
                   onClick={() => router.push('/')}
diff --git a/pages/invite/decline.js b/pages/invite/decline.js
index 3e912be..ef56cc8 100644
--- a/pages/invite/decline.js
+++ b/pages/invite/decline.js
@@ -77,7 +77,7 @@ export default function DeclineInvite() {
                   onClick={() => router.push('/collections')}
                   className="w-full px-6 py-3 rounded-lg font-medium gradient-bg-purple text-white hover:shadow-lg transform hover:scale-105 transition-all duration-200"
                 >
-                  Browse Public Collections
+                  Browse Public Lists
                 </button>
                 <button
                   onClick={() => router.push('/')}
@@ -105,7 +105,7 @@ export default function DeclineInvite() {
                   onClick={() => router.push('/collections')}
                   className="w-full px-6 py-3 rounded-lg font-medium gradient-bg-purple text-white hover:shadow-lg transform hover:scale-105 transition-all duration-200"
                 >
-                  Browse Collections
+                  Browse Lists
                 </button>
                 <button
                   onClick={() => router.push('/')}
diff --git a/pages/my-cards.js b/pages/my-cards.js
index 601cd16..1f9cfc7 100644
--- a/pages/my-cards.js
+++ b/pages/my-cards.js
@@ -8,6 +8,7 @@ import CollectionSelectionModal from '../components/CollectionSelectionModal';
 import { ManaCost, ColorFilterSymbol } from '../components/ManaSymbols';
 import ManaSymbolSettings from '../components/ManaSymbolSettings';
 import { useAuth } from '../lib/use-auth';
+import { VOCAB } from '../lib/collection-vocabulary.js';
 
 export default function MyCards() {
   const router = useRouter();
@@ -261,10 +262,10 @@ export default function MyCards() {
         <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4">
           <div>
             <h1 className="text-2xl sm:text-3xl font-bold mb-2" style={{ color: 'var(--text-primary)' }}>
-              My Cards
+              {VOCAB.MY_COLLECTION}
             </h1>
             <p className="text-base sm:text-lg" style={{ color: 'var(--text-secondary)' }}>
-              Browse and manage your owned trading cards
+              Browse and manage cards in your collection
             </p>
           </div>
           <div className="flex space-x-2 sm:space-x-4">
@@ -356,7 +357,7 @@ export default function MyCards() {
         {/* Results Summary */}
         <div className="flex items-center justify-between mb-4">
           <p style={{ color: 'var(--text-secondary)' }}>
-            {pagination.total} owned cards found
+            {pagination.total} cards in {VOCAB.MY_COLLECTION}
           </p>
           {selectedCards.length > 0 && (
             <p style={{ color: 'var(--text-primary)' }}>
@@ -432,7 +433,7 @@ export default function MyCards() {
                 <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M3 10h18M7 15h1m4 0h1m-7 4h12a3 3 0 003-3V8a3 3 0 00-3-3H6a3 3 0 00-3 3v8a3 3 0 003 3z" />
               </svg>
             </div>
-            <h3 className="text-lg font-semibold mb-2" style={{ color: 'var(--text-primary)' }}>No Owned Cards Found</h3>
+            <h3 className="text-lg font-semibold mb-2" style={{ color: 'var(--text-primary)' }}>No cards in {VOCAB.MY_COLLECTION}</h3>
             <p className="mb-4" style={{ color: 'var(--text-secondary)' }}>
               {searchQuery ? 'Try adjusting your search filters' : 'Start building your collection by browsing available cards'}
             </p>
diff --git a/pages/profile.js b/pages/profile.js
index 2227f61..e7560f4 100644
--- a/pages/profile.js
+++ b/pages/profile.js
@@ -393,7 +393,7 @@ export default function Profile() {
             {/* Stats Card */}
             <div className="card p-6 mt-6">
               <h3 className="text-lg font-semibold mb-4" style={{ color: 'var(--text-primary)' }}>
-                Collection Stats
+                List Stats
               </h3>
               <div className="space-y-4">
                 <div className="flex justify-between items-center">
@@ -403,7 +403,7 @@ export default function Profile() {
                   </span>
                 </div>
                 <div className="flex justify-between items-center">
-                  <span style={{ color: 'var(--text-secondary)' }}>Collections</span>
+                  <span style={{ color: 'var(--text-secondary)' }}>Lists</span>
                   <span className="font-semibold" style={{ color: 'var(--text-primary)' }}>
                     {stats.totalCollections}
                   </span>
diff --git a/pages/scanner.js b/pages/scanner.js
index 618853a..fc66c9a 100644
--- a/pages/scanner.js
+++ b/pages/scanner.js
@@ -9,10 +9,11 @@ import { ManaCost, ColorIdentity } from '../components/ManaSymbols';
 import ManaSymbolSettings from '../components/ManaSymbolSettings';
 import { useAuth } from '../lib/use-auth';
 import { useFocusTrap } from '../lib/use-focus-trap.js';
+import { VOCAB } from '../lib/collection-vocabulary.js';
 
 const SESSION_STORAGE_KEY = 'deckhearth:scanner-session';
 
-const DEFAULT_DESTINATION = { type: 'owned', id: null, label: 'My owned cards' };
+const DEFAULT_DESTINATION = { type: 'owned', id: null, label: VOCAB.MY_COLLECTION };
 const DEFAULT_SCAN_DEFAULTS = { condition: 'NM', isFoil: false };
 
 function loadSavedScannerSession() {
@@ -120,7 +121,7 @@ export default function Scanner() {
       });
       if (response.ok) {
         const data = await response.json();
-        // Filter out system collections (like "All My Cards")
+        // Filter out auto-sync system lists (not user-curated)
         const userCollections = data.filter(collection => !collection.is_system_collection);
         setCollections(userCollections);
       }
@@ -367,7 +368,7 @@ export default function Scanner() {
     });
 
     if (!response.ok) {
-      throw new Error('Failed to add to owned cards');
+      throw new Error(`Failed to add to ${VOCAB.MY_COLLECTION}`);
     }
   };
 
@@ -688,7 +689,7 @@ export default function Scanner() {
                   style={{ backgroundColor: 'var(--accent-gold)', color: 'white' }}
                 >
                   <span aria-hidden="true">💎 </span>
-                  Mark Owned
+                  {VOCAB.ADD_TO_MY_COLLECTION}
                 </button>
 
                 {collections.length > 0 && (
@@ -703,9 +704,9 @@ export default function Scanner() {
                     disabled={isProcessing}
                     className="px-4 py-2 rounded-lg font-medium"
                     style={{ backgroundColor: 'var(--accent-ember)', color: 'white', border: 'none' }}
-                    aria-label="Add selected cards to collection"
+                    aria-label="Add selected cards to list"
                   >
-                    <option value="">📚 Add to Collection</option>
+                    <option value="">{`📚 ${VOCAB.ADD_TO_LIST}`}</option>
                     {collections.map(collection => (
                       <option key={collection.id} value={collection.id}>
                         {collection.name}
diff --git a/test/components/ScannerDestinationPicker.test.js b/test/components/ScannerDestinationPicker.test.js
index 515d88b..f967663 100644
--- a/test/components/ScannerDestinationPicker.test.js
+++ b/test/components/ScannerDestinationPicker.test.js
@@ -22,15 +22,15 @@ describe('ScannerDestinationPicker', () => {
       <ScannerDestinationPicker
         gameFilter="All"
         onGameFilterChange={vi.fn()}
-        destination={{ type: 'owned', id: null, label: 'My owned cards' }}
+        destination={{ type: 'owned', id: null, label: 'My Collection' }}
         onDestinationChange={vi.fn()}
         collections={COLLECTIONS}
         decks={DECKS}
       />
     );
 
-    expect(screen.getByRole('button', { name: /owned/i }).getAttribute('aria-pressed')).toBe('true');
-    expect(screen.getByRole('button', { name: /collection/i }).getAttribute('aria-pressed')).toBe('false');
+    expect(screen.getByRole('button', { name: /my collection/i }).getAttribute('aria-pressed')).toBe('true');
+    expect(screen.getByRole('button', { name: /list/i }).getAttribute('aria-pressed')).toBe('false');
   });
 
   it('calls onDestinationChange when switching to a collection', () => {
@@ -40,14 +40,14 @@ describe('ScannerDestinationPicker', () => {
       <ScannerDestinationPicker
         gameFilter="All"
         onGameFilterChange={vi.fn()}
-        destination={{ type: 'owned', id: null, label: 'My owned cards' }}
+        destination={{ type: 'owned', id: null, label: 'My Collection' }}
         onDestinationChange={onDestinationChange}
         collections={COLLECTIONS}
         decks={DECKS}
       />
     );
 
-    fireEvent.click(screen.getByRole('button', { name: /collection/i }));
+    fireEvent.click(screen.getByRole('button', { name: /^📚 list$/i }));
 
     expect(onDestinationChange).toHaveBeenCalledWith({
       type: 'collection',
@@ -79,7 +79,7 @@ describe('ScannerDestinationPicker', () => {
       <ScannerDestinationPicker
         gameFilter="All"
         onGameFilterChange={onGameFilterChange}
-        destination={{ type: 'owned', id: null, label: 'My owned cards' }}
+        destination={{ type: 'owned', id: null, label: 'My Collection' }}
         onDestinationChange={vi.fn()}
         collections={COLLECTIONS}
         decks={DECKS}