There is no single answer to this question since it depends on what you want to use categories and tags for in your blog. However, generally speaking, categories are used to organize your blog posts, and tags are used to help people find your posts more easily.
For example, if you run a blog about cooking, you might use cooking-related categories such as recipes, ingredients, cooking tips, etc. You might also add cooking-related tags such as easy recipes, healthy recipes, etc.
This way, when someone is browsing through your blog posts, they can more easily find what they are looking for by using those specific tags.
While categories and tags are helpful in organizing your blog posts, it’s important to remember that they aren’t the only way to organize your content. You also have the option of organizing your posts by topic or by topic area.
This way, you can create separate sections within your blog where you post all of the related content.