diff --git a/lib/shared/messages/create-sidebar-message-spec.js b/lib/shared/messages/create-sidebar-message-spec.js
--- a/lib/shared/messages/create-sidebar-message-spec.js
+++ b/lib/shared/messages/create-sidebar-message-spec.js
@@ -170,7 +170,7 @@
   ): string {
     let text = `started ${params.encodedThreadEntity(
       messageInfo.threadID,
-      `this sidebar`,
+      `this thread`,
     )}`;
     const users = messageInfo.initialThreadState.otherMembers.filter(
       member => member.id !== messageInfo.sourceMessageAuthor.id,
@@ -198,7 +198,7 @@
       threadID: rawMessageInfo.threadID,
       creatorID: rawMessageInfo.creatorID,
       time: rawMessageInfo.time,
-      robotext: 'created a sidebar',
+      robotext: 'created a thread',
       unsupportedMessageInfo: rawMessageInfo,
     };
   },
@@ -225,7 +225,7 @@
       ? 'your'
       : `${stringForUser(messageInfo.sourceMessageAuthor)}'s`;
     const body =
-      `started a sidebar in response to ${sourceMessageAuthorPossessive} ` +
+      `started a thread in response to ${sourceMessageAuthorPossessive} ` +
       `message "${messageInfo.initialThreadState.name ?? ''}"`;
     const merged = `${prefix} ${body}`;
     return {
diff --git a/lib/shared/messages/create-sub-thread-message-spec.js b/lib/shared/messages/create-sub-thread-message-spec.js
--- a/lib/shared/messages/create-sub-thread-message-spec.js
+++ b/lib/shared/messages/create-sub-thread-message-spec.js
@@ -125,7 +125,7 @@
     const childName = messageInfo.childThreadInfo.name;
     const childNoun =
       messageInfo.childThreadInfo.type === threadTypes.SIDEBAR
-        ? 'sidebar'
+        ? 'thread'
         : 'subchannel';
     if (childName) {
       return (
diff --git a/lib/shared/messages/sidebar-source-message-spec.js b/lib/shared/messages/sidebar-source-message-spec.js
--- a/lib/shared/messages/sidebar-source-message-spec.js
+++ b/lib/shared/messages/sidebar-source-message-spec.js
@@ -149,7 +149,7 @@
       threadID: rawMessageInfo.threadID,
       creatorID: rawMessageInfo.creatorID,
       time: rawMessageInfo.time,
-      robotext: 'first message in sidebar',
+      robotext: 'first message in thread',
       dontPrefixCreator: true,
       unsupportedMessageInfo: rawMessageInfo,
     };
diff --git a/lib/shared/search-utils.js b/lib/shared/search-utils.js
--- a/lib/shared/search-utils.js
+++ b/lib/shared/search-utils.js
@@ -113,7 +113,7 @@
       if (!isMemberOfParentThread && threadType === threadTypes.SIDEBAR) {
         notice = 'not in parent chat';
         alertTitle = 'Not in parent chat';
-        alertText = 'You can only add members of the parent chat to a sidebar';
+        alertText = 'You can only add members of the parent chat to a thread';
       } else if (
         relationshipStatus === userRelationshipStatus.BLOCKED_BY_VIEWER
       ) {
diff --git a/lib/shared/thread-utils.js b/lib/shared/thread-utils.js
--- a/lib/shared/thread-utils.js
+++ b/lib/shared/thread-utils.js
@@ -932,7 +932,7 @@
 };
 
 function threadNoun(threadType: ThreadType): string {
-  return threadType === threadTypes.SIDEBAR ? 'sidebar' : 'chat';
+  return threadType === threadTypes.SIDEBAR ? 'thread' : 'chat';
 }
 
 function threadLabel(threadType: ThreadType): string {
@@ -944,7 +944,7 @@
   } else if (threadType === threadTypes.PERSONAL) {
     return 'Personal';
   } else if (threadType === threadTypes.SIDEBAR) {
-    return 'Sidebar';
+    return 'Thread';
   } else if (threadType === threadTypes.PRIVATE) {
     return 'Private';
   } else if (
diff --git a/native/chat/chat-thread-list-see-more-sidebars.react.js b/native/chat/chat-thread-list-see-more-sidebars.react.js
--- a/native/chat/chat-thread-list-see-more-sidebars.react.js
+++ b/native/chat/chat-thread-list-see-more-sidebars.react.js
@@ -26,7 +26,7 @@
   const colors = useColors();
   const styles = useStyles(unboundStyles);
   const unreadStyle = unread ? styles.unread : null;
-  const buttonText = showingSidebarsInline ? 'See more...' : 'See sidebars...';
+  const buttonText = showingSidebarsInline ? 'See more...' : 'See threads...';
   return (
     <Button
       iosFormat="highlight"
diff --git a/native/chat/multimedia-message-tooltip-modal.react.js b/native/chat/multimedia-message-tooltip-modal.react.js
--- a/native/chat/multimedia-message-tooltip-modal.react.js
+++ b/native/chat/multimedia-message-tooltip-modal.react.js
@@ -24,12 +24,12 @@
   entries: [
     {
       id: 'create_sidebar',
-      text: 'Create sidebar',
+      text: 'Create thread',
       onPress: navigateToSidebar,
     },
     {
       id: 'open_sidebar',
-      text: 'Go to sidebar',
+      text: 'Go to thread',
       onPress: navigateToSidebar,
     },
     {
diff --git a/native/chat/robotext-message-tooltip-modal.react.js b/native/chat/robotext-message-tooltip-modal.react.js
--- a/native/chat/robotext-message-tooltip-modal.react.js
+++ b/native/chat/robotext-message-tooltip-modal.react.js
@@ -20,12 +20,12 @@
   entries: [
     {
       id: 'create_sidebar',
-      text: 'Create sidebar',
+      text: 'Create thread',
       onPress: navigateToSidebar,
     },
     {
       id: 'open_sidebar',
-      text: 'Go to sidebar',
+      text: 'Go to thread',
       onPress: navigateToSidebar,
     },
   ],
diff --git a/native/chat/settings/thread-settings-promote-sidebar.react.js b/native/chat/settings/thread-settings-promote-sidebar.react.js
--- a/native/chat/settings/thread-settings-promote-sidebar.react.js
+++ b/native/chat/settings/thread-settings-promote-sidebar.react.js
@@ -26,7 +26,7 @@
   onClick = () => {
     Alert.alert(
       'Are you sure?',
-      'Promoting a sidebar to a channel cannot be undone.',
+      'Promoting a thread to a channel cannot be undone.',
       [
         {
           text: 'Cancel',
diff --git a/native/chat/settings/thread-settings.react.js b/native/chat/settings/thread-settings.react.js
--- a/native/chat/settings/thread-settings.react.js
+++ b/native/chat/settings/thread-settings.react.js
@@ -558,7 +558,7 @@
       listData.push({
         itemType: 'header',
         key: 'sidebarHeader',
-        title: 'Sidebars',
+        title: 'Threads',
         categoryType: 'unpadded',
       });
 
diff --git a/native/chat/sidebar-list-modal.react.js b/native/chat/sidebar-list-modal.react.js
--- a/native/chat/sidebar-list-modal.react.js
+++ b/native/chat/sidebar-list-modal.react.js
@@ -88,7 +88,7 @@
         searchText={searchState.text}
         onChangeText={onChangeSearchInputText}
         containerStyle={styles.search}
-        placeholder="Search sidebars"
+        placeholder="Search threads"
         ref={setSearchTextInputRef}
       />
       <FlatList
diff --git a/native/chat/text-message-tooltip-modal.react.js b/native/chat/text-message-tooltip-modal.react.js
--- a/native/chat/text-message-tooltip-modal.react.js
+++ b/native/chat/text-message-tooltip-modal.react.js
@@ -56,12 +56,12 @@
     },
     {
       id: 'create_sidebar',
-      text: 'Create sidebar',
+      text: 'Create thread',
       onPress: navigateToSidebar,
     },
     {
       id: 'open_sidebar',
-      text: 'Go to sidebar',
+      text: 'Go to thread',
       onPress: navigateToSidebar,
     },
   ],
diff --git a/web/chat/chat-thread-list-see-more-sidebars.react.js b/web/chat/chat-thread-list-see-more-sidebars.react.js
--- a/web/chat/chat-thread-list-see-more-sidebars.react.js
+++ b/web/chat/chat-thread-list-see-more-sidebars.react.js
@@ -22,7 +22,7 @@
     () => pushModal(<SidebarListModal threadInfo={threadInfo} />),
     [pushModal, threadInfo],
   );
-  const buttonText = showingSidebarsInline ? 'See more...' : 'See sidebars...';
+  const buttonText = showingSidebarsInline ? 'See more...' : 'See threads...';
   return (
     <div className={classNames(css.thread, css.sidebar)} onClick={onClick}>
       <a className={css.threadButton}>
diff --git a/web/chat/message-tooltip.react.js b/web/chat/message-tooltip.react.js
--- a/web/chat/message-tooltip.react.js
+++ b/web/chat/message-tooltip.react.js
@@ -33,8 +33,8 @@
 
 const messageActionIconExcessVerticalWhitespace = 10;
 
-const openSidebarText = 'Go to sidebar';
-const createSidebarText = 'Create sidebar';
+const openSidebarText = 'Go to thread';
+const createSidebarText = 'Create thread';
 
 type TooltipType = 'sidebar' | 'reply';
 
diff --git a/web/chat/sidebar-item.react.js b/web/chat/sidebar-item.react.js
--- a/web/chat/sidebar-item.react.js
+++ b/web/chat/sidebar-item.react.js
@@ -30,12 +30,12 @@
       <img
         className={css.longArrow}
         src="images/long_arrow.svg"
-        alt="sidebar arrow"
+        alt="thread arrow"
       />
     );
   } else {
     arrow = (
-      <img src="images/arrow.svg" className={css.arrow} alt="sidebar arrow" />
+      <img src="images/arrow.svg" className={css.arrow} alt="thread arrow" />
     );
   }
 
diff --git a/web/chat/thread-menu.react.js b/web/chat/thread-menu.react.js
--- a/web/chat/thread-menu.react.js
+++ b/web/chat/thread-menu.react.js
@@ -105,7 +105,7 @@
     return (
       <MenuItem
         key="sidebars"
-        text="Sidebars"
+        text="Threads"
         icon="arrow-right-small"
         onClick={onClickSidebars}
       />
diff --git a/web/modals/chat/sidebar-list-modal.react.js b/web/modals/chat/sidebar-list-modal.react.js
--- a/web/modals/chat/sidebar-list-modal.react.js
+++ b/web/modals/chat/sidebar-list-modal.react.js
@@ -68,7 +68,7 @@
   );
 
   return (
-    <Modal name="Sidebars" onClose={popModal}>
+    <Modal name="Threads" onClose={popModal}>
       <div
         className={classNames(
           globalCSS['modal-body'],
@@ -80,7 +80,7 @@
             <MagnifyingGlass className={chatThreadListCSS.searchVector} />
             <Input
               type="text"
-              placeholder="Search sidebars"
+              placeholder="Search threads"
               value={searchState.text}
               onChange={handleOnChangeSearchText}
             />
diff --git a/web/modals/chat/sidebar-promote-modal.react.js b/web/modals/chat/sidebar-promote-modal.react.js
--- a/web/modals/chat/sidebar-promote-modal.react.js
+++ b/web/modals/chat/sidebar-promote-modal.react.js
@@ -32,7 +32,7 @@
     >
       <div className={css.modal_body}>
         <p>{`Are you sure you want to promote "${uiName}"?`}</p>
-        <p>Promoting a sidebar to a channel cannot be undone.</p>
+        <p>Promoting a thread to a channel cannot be undone.</p>
         <div className={css.buttonContainer}>
           <Button onClick={onClose} type="submit" variant="secondary">
             Cancel