Manage → Categories. Each post in WordPress is filed under one or more Categories. This aids in navigation and allows posts and to be grouped with others of.
You can use a custom menu to add a "tab" to your site which will display only the posts that share the same blog category. Step 1 Add a new blog post to your.
Understanding Parent, Child, and Sibling Categories in WordPress It will help you understand how categories are different than tags, why.