WordPress uses categories to organise and display posts on your site.
Categories are an important part of WordPress search engine optimisation and should be planned out carefully. They can help visitors find relevant topics and quickly show what you write about on your site, allowing them to navigate your site faster.
It’s best to not have too many categories on your site as each one needs to be considered and should have a focus keyword to match.
For example, you could have multiple categories, such as News, Updates, Opinions, Events etc.
The default in a WordPress installation is ‘Uncategorized’.