Cross-link topics docs

doc/user/admin_area/index.md

@@ -241,25 +241,27 @@ To [Create a new group](../group/index.md#create-a-group) click **New group**.
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/340920) in GitLab 14.4.
 
-You can administer all topics in the GitLab instance from the Admin Area's Topics page.
+You can administer all [topics](../project/settings/index.md#topics) in the GitLab instance from the
+Admin Area's Topics page.
 
 To access the Topics page:
 
 1. On the top bar, select **Menu > Admin**.
 1. On the left sidebar, select **Overview > Topics**.
 
-For each topic, the page displays their name and number of projects labeled with the topic.
+For each topic, the page displays its name and the number of projects labeled with the topic.
 
 To create a new topic, select **New topic**.
 
 To edit a topic, select **Edit** in that topic's row.
 
 To search for topics by name, enter your criteria in the search box. The topic search is case
-insensitive, and applies partial matching.
+insensitive and applies partial matching.
 
 NOTE:
-Topics are public and visible to everyone, but assignments to projects are not.
-Do not include sensitive information in the name or description of a topic.
+The assigned topics are visible only to everyone with access to the project,
+but everyone can see which topics exist at all on the GitLab instance.
+Do not include sensitive information in the name of a topic.
 
 ### Administering Jobs
 

doc/user/project/settings/index.md

@@ -51,6 +51,9 @@ The assigned topics are visible only to everyone with access to the project,
 but everyone can see which topics exist at all on the GitLab instance.
 Do not include sensitive information in the name of a topic.
 
+If you're an instance administrator, see also
+[Administering topics](../../admin_area/index.md#administering-topics).
+
 #### Compliance frameworks **(PREMIUM)**
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/276221) in GitLab 13.9.