How to Create Custom Taxonomies in WordPress
Similarly, you can create a custom taxonomy to group certain posts in separate groups for convenience like Locations. For example, one of the most popular custom taxonomies that most people create is Topics. Even though there is Categories, people like to differentiate their posts based on Topics for their own convenience. Even they can show the menu on their website with the custom taxonomy that they make. Suppose you have a website where you review books, movies and stuff like that. In the Topics, you can have the genres rather than including them under categories. It can also stand for sub-categories or sub-menus. You should create custom taxonomies in WordPress to keep things under control before everything spreads out. You can literally sort your posts and make changes to that group of posts very easily.