Category Changes When I Change Tag

Hello. On my site http://test.discoversoccer.info I want to have the category “Dribbling” with a separate tag “dribbling”.

Using the admin panel, I have tried making the capitalized tag name small. That makes the category name small as well. I’ve also tried changing the slug so that there is dribbling-category and dribbling-tag to see if that helps, but even the slug changes for both.

What’s particularly odd is I have this for other category/tags such as “Speed” and “speed”, and it works fine. However for some reason with dribbling they are linked.

Please help.

Thank you in advance.