diff --git a/files/en-us/_redirects.txt b/files/en-us/_redirects.txt
index 64d7c2f0bd58bd5..8169f0c4e310e32 100644
--- a/files/en-us/_redirects.txt
+++ b/files/en-us/_redirects.txt
@@ -7559,8 +7559,6 @@
 /en-US/docs/Web/API/DocumentOrShadowRoot/fullscreenElement	/en-US/docs/Web/API/Document/fullscreenElement
 /en-US/docs/Web/API/DocumentOrShadowRoot/getAnimations	/en-US/docs/Web/API/Document/getAnimations
 /en-US/docs/Web/API/DocumentOrShadowRoot/getSelection	/en-US/docs/Web/API/Document/getSelection
-/en-US/docs/Web/API/DocumentOrShadowRoot/nodeFromPoint	/en-US/docs/Web/API/DocumentOrShadowRoot
-/en-US/docs/Web/API/DocumentOrShadowRoot/nodesFromPoint	/en-US/docs/Web/API/DocumentOrShadowRoot
 /en-US/docs/Web/API/DocumentOrShadowRoot/pictureInPictureElement	/en-US/docs/Web/API/Document/pictureInPictureElement
 /en-US/docs/Web/API/DocumentOrShadowRoot/pictureInPictureEnabled	/en-US/docs/Web/API/Document/pictureInPictureEnabled
 /en-US/docs/Web/API/DocumentOrShadowRoot/pointerLockElement	/en-US/docs/Web/API/Document/pointerLockElement
diff --git a/files/en-us/_wikihistory.json b/files/en-us/_wikihistory.json
index 8de0bc83ce0e0d0..e1832f8c722d90b 100644
--- a/files/en-us/_wikihistory.json
+++ b/files/en-us/_wikihistory.json
@@ -44274,21 +44274,6 @@
       "teoli"
     ]
   },
-  "Web/API/DocumentOrShadowRoot": {
-    "modified": "2020-11-04T11:07:53.581Z",
-    "contributors": [
-      "Rumyra",
-      "germain",
-      "mfuji09",
-      "chrisdavidmills",
-      "foolip",
-      "Sheppy",
-      "ExE-Boss",
-      "jpmedley",
-      "iainreid629",
-      "david_ross"
-    ]
-  },
   "Web/API/DocumentTimeline": {
     "modified": "2020-10-15T21:45:09.763Z",
     "contributors": [
@@ -165786,4 +165771,4 @@
       "jpmedley"
     ]
   }
-}
+}
\ No newline at end of file
diff --git a/files/en-us/web/api/documentorshadowroot/index.html b/files/en-us/web/api/documentorshadowroot/index.html
deleted file mode 100644
index 3dc19ecd365076d..000000000000000
--- a/files/en-us/web/api/documentorshadowroot/index.html
+++ /dev/null
@@ -1,79 +0,0 @@
----
-title: DocumentOrShadowRoot
-slug: Web/API/DocumentOrShadowRoot
-tags:
-  - API
-  - Document
-  - DocumentOrShadowRoot
-  - Interface
-  - Reference
-  - ShadowRoot
-  - shadow dom
----
-<div>{{APIRef("Web Components")}}</div>
-
-<p><span class="seoSummary">The <strong><code>DocumentOrShadowRoot</code></strong> mixin of the <a href="/en-US/docs/Web/Web_Components/Using_shadow_DOM">Shadow DOM API</a> provides APIs that are shared between documents and shadow roots. The following features are included in both {{DOMxRef("Document")}} and {{DOMxRef("ShadowRoot")}}. </span></p>
-
-<h2 id="Properties">Properties</h2>
-
-<dl>
- <dt>{{DOMxRef("Document.activeElement")}}{{ReadOnlyInline}}</dt>
- <dd>Returns the {{DOMxRef('Element')}} within the shadow tree that has focus.</dd>
- <dt>{{DOMxRef("Document.fullscreenElement")}}{{ReadOnlyInline}}</dt>
- <dd>Returns the {{DOMxRef('Element')}} that's currently in full screen mode for this document.</dd>
- <dt>{{DOMxRef("Document.pictureInPictureElement")}}{{ReadOnlyInline}}</dt>
- <dd>Returns the {{DOMxRef('HTMLVideoElement')}} that's currently in picture-in-picture mode for this document.</dd>
- <dt>{{DOMxRef("Document.pointerLockElement")}} {{Experimental_Inline}}{{ReadOnlyInline}}</dt>
- <dd>Returns the element set as the target for mouse events while the pointer is locked. It returns <code>null</code> if lock is pending, the pointer is unlocked, or if the target is in another document.</dd>
- <dt>{{DOMxRef("Document.styleSheets")}}{{ReadOnlyInline}}</dt>
- <dd>Returns a {{DOMxRef('StyleSheetList')}} of {{DOMxRef('CSSStyleSheet')}} objects for stylesheets explicitly linked into, or embedded in a document.</dd>
-</dl>
-
-<h2 id="Methods">Methods</h2>
-
-<dl>
- <dt>{{DOMxRef("DocumentOrShadowRoot.caretPositionFromPoint()")}}</dt>
- <dd>Returns a {{DOMxRef('CaretPosition')}} object containing the DOM node containing the caret, and caret's character offset within that node.</dd>
- <dt>{{DOMxRef("DocumentOrShadowRoot.elementFromPoint()")}}</dt>
- <dd>Returns the topmost element at the specified coordinates.</dd>
- <dt>{{DOMxRef("DocumentOrShadowRoot.elementsFromPoint()")}}</dt>
- <dd>Returns an array of all elements at the specified coordinates.</dd>
- <dt>{{DOMxRef("DocumentOrShadowRoot.getAnimations()")}} {{Experimental_Inline}}</dt>
- <dd>Returns an array of all {{DOMxRef("Animation")}} objects currently in effect, whose target elements are descendants of the <code>document</code></dd>
- <dt>{{DOMxRef("DocumentOrShadowRoot.getSelection()")}}</dt>
- <dd>Returns a {{DOMxRef('Selection')}} object representing the range of text selected by the user, or the current position of the caret.</dd>
- <dt>{{DOMxRef("DocumentOrShadowRoot.nodeFromPoint()")}} {{non-standard_inline}}</dt>
- <dd>Returns the topmost node at the specified coordinates.</dd>
- <dt>{{DOMxRef("DocumentOrShadowRoot.nodesFromPoint()")}} {{non-standard_inline}}</dt>
- <dd>Returns an array of all nodes at the specified coordinates.</dd>
-</dl>
-
-<h2 id="Specifications">Specifications</h2>
-
-<table class="standard-table">
- <thead>
-  <tr>
-   <th scope="col">Specification</th>
-   <th scope="col">Status</th>
-   <th scope="col">Comment</th>
-  </tr>
- </thead>
- <tbody>
-  <tr>
-   <td>{{SpecName('Shadow DOM','#extensions-to-the-documentorshadowroot-mixin','DocumentOrShadowRoot')}}</td>
-   <td>{{Spec2('Shadow DOM')}}</td>
-   <td>Implementation in Shadow DOM.</td>
-  </tr>
-  <tr>
-   <td>{{SpecName('DOM WHATWG','#mixin-documentorshadowroot','DocumentOrShadowRoot')}}</td>
-   <td>{{Spec2('DOM WHATWG')}}</td>
-   <td>Initial definition.</td>
-  </tr>
- </tbody>
-</table>
-
-<h2 id="Browser_compatibility">Browser compatibility</h2>
-
-<p>{{Compat("api.DocumentOrShadowRoot")}}</p>
-
-<p>[1] This interface's features are still implemented on the {{DOMxRef("Document")}} object.</p>
diff --git a/files/en-us/web/api/picture-in-picture_api/index.html b/files/en-us/web/api/picture-in-picture_api/index.html
index c5a9d32af2d3e1a..5cd5ebda25701aa 100644
--- a/files/en-us/web/api/picture-in-picture_api/index.html
+++ b/files/en-us/web/api/picture-in-picture_api/index.html
@@ -45,7 +45,7 @@ <h3 id="Methods_on_the_Document_interface">Methods on the Document interface</h3
 
 <h2 id="Properties">Properties</h2>
 
-<p><em>The Picture-in-Picture API augments the </em>{{DOMxRef("HTMLVideoElement")}}, {{DOMxRef("Document")}}, and {{DOMxRef("DocumentOrShadowRoot")}} <em>interfaces with properties that can be used to determine if the floating video window mode is supported and available, if picture-in-picture mode is currently active, and which video is floating.</em></p>
+<p><em>The Picture-in-Picture API augments the </em>{{DOMxRef("HTMLVideoElement")}}, {{DOMxRef("Document")}}, and {{DOMxRef("ShadowRoot")}} <em>interfaces with properties that can be used to determine if the floating video window mode is supported and available, if picture-in-picture mode is currently active, and which video is floating.</em></p>
 
 <h3 id="Properties_on_the_HTMLVideoElement_interface">Properties on the HTMLVideoElement interface</h3>
 
diff --git a/files/en-us/web/api/pointer_lock_api/index.html b/files/en-us/web/api/pointer_lock_api/index.html
index 27668a71037c6ae..75c6aa767969399 100644
--- a/files/en-us/web/api/pointer_lock_api/index.html
+++ b/files/en-us/web/api/pointer_lock_api/index.html
@@ -48,9 +48,9 @@ <h3 id="requestPointerLock">requestPointerLock()</h3>
 
 <h3 id="pointerLockElement_and_exitPointerLock">pointerLockElement and exitPointerLock()</h3>
 
-<p>The Pointer lock API also extends the {{domxref("Document")}} interface, adding both a new property and a new method. The new property is used for accessing the currently locked element (if any), and is named {{domxref("DocumentOrShadowRoot/pointerLockElement","pointerLockElement")}} and the new method on {{domxref("Document")}} is {{domxref("Document.exitPointerLock","exitPointerLock()")}} and, as the name implies, it is used to exit the pointer lock.</p>
+<p>The Pointer lock API also extends the {{domxref("Document")}} interface, adding both a new property and a new method. The new property is used for accessing the currently locked element (if any), and is named {{domxref("Document.pointerLockElement","pointerLockElement")}} and the new method on {{domxref("Document")}} is {{domxref("Document.exitPointerLock","exitPointerLock()")}} and, as the name implies, it is used to exit the pointer lock.</p>
 
-<p>The {{domxref("DocumentOrShadowRoot/pointerLockElement","pointerLockElement")}} property is useful for determining if any element is currently pointer locked (e.g., for doing a Boolean check) and also for obtaining a reference to the locked element, if any.</p>
+<p>The {{domxref("Document.pointerLockElement","pointerLockElement")}} property is useful for determining if any element is currently pointer locked (e.g., for doing a Boolean check) and also for obtaining a reference to the locked element, if any.</p>
 
 <p>Here is an example of using <code>pointerLockElement</code>:</p>
 
diff --git a/files/en-us/web/web_components/index.html b/files/en-us/web/web_components/index.html
index 1db846e079d4f2c..ae0a9181ab59710 100644
--- a/files/en-us/web/web_components/index.html
+++ b/files/en-us/web/web_components/index.html
@@ -101,8 +101,6 @@ <h3 id="Shadow_DOM">Shadow DOM</h3>
 <dl>
  <dt>{{domxref("ShadowRoot")}}</dt>
  <dd>Represents the root node of a shadow DOM subtree.</dd>
- <dt>{{domxref("DocumentOrShadowRoot")}}</dt>
- <dd>A mixin defining features that are available across document and shadow roots.</dd>
  <dt>{{domxref("Element")}} extensions</dt>
  <dd>Extensions to the <code>Element</code> interface related to shadow DOM:
  <ul>