To rename a category click "Manage Words" from the main menu
Renaming one category
The simplest way to rename just one category is to click the button shown below.
This will take you to the following screen. Enter the new name and click "Apply"
Changing all category names
If you want to change more than one category name or even all of them then from the toolbar click "Rename > Rename All Categories".
Change the names you require and whether that category will contain words or phrases and then click "Apply". Categories which contain phrases will be tested on only 10 phrases at a time whereas words are tested using 20 words at a time.
IMPORTANT
All category names must be unique