Category and Tag are two default WordPress taxonomies which help you to group posts together easily. You also can create your own taxonomy to group your contents.
Assuming you want to . Here are steps to do:
I. Register a new taxonomy
First, you need to , using the register_taxonomy() function, or using another plugin (Custom Post Type UI, Toolset Types, etc.).
II. Convert specific categories to new taxonomy
There are 2 possible ways to convert:
Please install and use this plugin Taxonomy Switcher.
This is the recommended way to convert quickly, easily, and safety.
Or you can convert manually with below steps:
Add terms to the new taxonomy
Move posts from a category to new taxonomy term
The quickest way is:
+ In WordPress admin Posts page, select a specific category, then click “Filter” button to show all matching posts:
+ Select the top checkbox, select the “Edit” option in the “Bulk Actions” dropdown, then click “Apply” button:
+ Select the desired term of the new taxonomy:
then click the “Update” button.
Repeat this step for each category you want to convert.
Remove converted categories (optionally)
After above steps, you might remove categories which are already converted to (replaced by) new taxonomy.