diff --git a/index.html b/index.html
index 8af96007f..8a2934d61 100644
--- a/index.html
+++ b/index.html
@@ -3565,7 +3565,7 @@ <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>
@@ -4633,7 +4633,7 @@ <h2>Definition of Roles</h2>
 						<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>
@@ -5391,9 +5391,9 @@ <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>
@@ -5485,9 +5485,9 @@ <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>
@@ -5585,8 +5585,8 @@ <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>
@@ -5689,8 +5689,8 @@ <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>
@@ -5791,8 +5791,8 @@ <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>
@@ -6072,7 +6072,7 @@ <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>
@@ -7028,9 +7028,9 @@ <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>
@@ -8870,7 +8870,7 @@ <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>
@@ -9784,7 +9784,7 @@ <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>
@@ -9888,7 +9888,7 @@ <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>
@@ -9992,7 +9992,7 @@ <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>