diff --git a/index.html b/index.html
index 99afcc401..4cd22b575 100644
--- a/index.html
+++ b/index.html
@@ -3378,7 +3378,7 @@ <h2>Definition of Roles</h2>
 						<td class="role-mustcontain">
 							<ul>
 								<li><rref>row</rref></li>
-								<li><rref>rowgroup</rref> containing <rref>row</rref></li>
+								<li><rref>rowgroup</rref> owning <rref>row</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -4252,7 +4252,7 @@ <h5>Note regarding the ARIA 1.3 <code>image</code> role.</h5>
 						<th class="role-mustcontain-head" scope="row">Required Owned Elements:</th>
 						<td class="role-mustcontain">
 							<ul>
-								<li><rref>group</rref> containing <rref>option</rref></li>
+								<li><rref>group</rref> owning <rref>option</rref></li>
 								<li><rref>option</rref></li>
 							</ul>
 						</td>
@@ -4820,9 +4820,9 @@ <h4>Plain HTML or Polyfill DOM Result of the MathML Quadratic Formula</h4>
 						<td class="role-mustcontain">
 							<ul>
 								<!-- keep in sync with #menubar -->
-								<li><rref>group</rref> containing <rref>menuitem</rref></li>
-								<li><rref>group</rref> containing <rref>menuitemradio</rref></li>
-								<li><rref>group</rref> containing <rref>menuitemcheckbox</rref></li>
+								<li><rref>group</rref> owning <rref>menuitem</rref></li>
+								<li><rref>group</rref> owning <rref>menuitemradio</rref></li>
+								<li><rref>group</rref> owning <rref>menuitemcheckbox</rref></li>
 								<li><rref>menuitem</rref></li>
 								<li><rref>menuitemcheckbox</rref></li>
 								<li><rref>menuitemradio</rref></li>
@@ -4914,9 +4914,9 @@ <h4>Plain HTML or Polyfill DOM Result of the MathML Quadratic Formula</h4>
 						<td class="role-mustcontain">
 							<ul>
 								<!-- keep in sync with #menu -->
-								<li><rref>group</rref> containing <rref>menuitem</rref></li>
-								<li><rref>group</rref> containing <rref>menuitemradio</rref></li>
-								<li><rref>group</rref> containing <rref>menuitemcheckbox</rref></li>
+								<li><rref>group</rref> owning <rref>menuitem</rref></li>
+								<li><rref>group</rref> owning <rref>menuitemradio</rref></li>
+								<li><rref>group</rref> owning <rref>menuitemcheckbox</rref></li>
 								<li><rref>menuitem</rref></li>
 								<li><rref>menuitemcheckbox</rref></li>
 								<li><rref>menuitemradio</rref></li>
@@ -5013,8 +5013,8 @@ <h4>Plain HTML or Polyfill DOM Result of the MathML Quadratic Formula</h4>
 							<ul>
 								<li><rref>menu</rref></li>
 								<li><rref>menubar</rref></li>
-								<li><rref>group</rref> contained by <rref>menu</rref></li>
-								<li><rref>group</rref> contained by <rref>menubar</rref></li>
+								<li><rref>group</rref> owned by <rref>menu</rref></li>
+								<li><rref>group</rref> owned by <rref>menubar</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -5116,8 +5116,8 @@ <h4>Plain HTML or Polyfill DOM Result of the MathML Quadratic Formula</h4>
 							<ul>
 								<li><rref>menu</rref></li>
 								<li><rref>menubar</rref></li>
-								<li><rref>group</rref> contained by <rref>menu</rref></li>
-								<li><rref>group</rref> contained by <rref>menubar</rref></li>
+								<li><rref>group</rref> owned by <rref>menu</rref></li>
+								<li><rref>group</rref> owned by <rref>menubar</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -5217,8 +5217,8 @@ <h4>Plain HTML or Polyfill DOM Result of the MathML Quadratic Formula</h4>
 							<ul>
 								<li><rref>menu</rref></li>
 								<li><rref>menubar</rref></li>
-								<li><rref>group</rref> contained by <rref>menu</rref></li>
-								<li><rref>group</rref> contained by <rref>menubar</rref></li>
+								<li><rref>group</rref> owned by <rref>menu</rref></li>
+								<li><rref>group</rref> owned by <rref>menubar</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -5569,7 +5569,7 @@ <h5>Note regarding the ARIA 1.1 <code>none</code> role.</h5>
 						<td class="role-scope">
 							<ul>
 								<li><rref>listbox</rref></li>
-								<li><rref>group</rref> contained by <rref>listbox</rref></li>
+								<li><rref>group</rref> owned by <rref>listbox</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -6522,9 +6522,9 @@ <h5>Note regarding the ARIA 1.1 <rref>none</rref> role.</h5>
 								<li><rref>grid</rref></li>
 								<li><rref>table</rref></li>
 								<li><rref>treegrid</rref></li>
-								<li><rref>rowgroup</rref> contained by <rref>grid</rref></li>
-								<li><rref>rowgroup</rref> contained by <rref>table</rref></li>
-								<li><rref>rowgroup</rref> contained by <rref>treegrid</rref></li>
+								<li><rref>rowgroup</rref> owned by <rref>grid</rref></li>
+								<li><rref>rowgroup</rref> owned by <rref>table</rref></li>
+								<li><rref>rowgroup</rref> owned by <rref>treegrid</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -8246,7 +8246,7 @@ <h5>Note regarding the ARIA 1.1 <rref>none</rref> role.</h5>
 						<td class="role-mustcontain">
 							<ul>
 								<li><rref>row</rref></li>
-								<li><rref>rowgroup</rref> containing <rref>row</rref></li>
+								<li><rref>rowgroup</rref> owning <rref>row</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -9175,7 +9175,7 @@ <h5>Note regarding the ARIA 1.1 <rref>none</rref> role.</h5>
 						<th class="role-mustcontain-head" scope="row">Required Owned Elements:</th>
 						<td class="role-mustcontain">
 							<ul>
-								<li><rref>group</rref> containing <rref>treeitem</rref></li>
+								<li><rref>group</rref> owning <rref>treeitem</rref></li>
 								<li><rref>treeitem</rref></li>
 							</ul>
 						</td>
@@ -9279,7 +9279,7 @@ <h5>Note regarding the ARIA 1.1 <rref>none</rref> role.</h5>
 						<td class="role-mustcontain">
 							<ul>
 								<li><rref>row</rref></li>
-								<li><rref>rowgroup</rref> containing <rref>row</rref></li>
+								<li><rref>rowgroup</rref> owning <rref>row</rref></li>
 							</ul>
 						</td>
 					</tr>
@@ -9364,7 +9364,7 @@ <h5>Note regarding the ARIA 1.1 <rref>none</rref> role.</h5>
 						<td class="role-scope">
 							<ul>
 								<li><rref>tree</rref></li>
-								<li><rref>group</rref> contained by <rref>treeitem</rref></li>
+								<li><rref>group</rref> owned by <rref>treeitem</rref></li>
 							</ul>
 						</td>
 					</tr>