...
Label – This is an alternative description that can be given to a category and unlike the category title this does not need to be unique. If this field is populated the name will be used on the Dashboard, hovering over the name will show the name of the category. Please have a look at this page for related information.
Example
In the following screenshot, a new category has been created called ‘My new category’ and a label was added to that category called ‘Insurance’. There are now 2 categories, one in the parent category of ‘Dashboarding’ and one in the parent category of ‘Features’ called ‘Insurance’. Hovering over each of them will display the associated category name.
...