As a novice WordPress user you might be confused about the function of categories and tags. They work in similar ways and they’re both used to classify and arrange your posts. But a category and a tag has its own specific function, and learning to use each one correctly can help better organize your site and make it easier to read.
Categories are a way to classify and order your posts. They are hierarchical, which means they can be arranged with a parent-child structure. For example, a blog that produces automobile reviews might have categories that take this structure: