It all depends on the studio.
in engilsh a student.In karate a karate-ka
The place to learn karate is called the dojo.
Unfortunately, nowhere. It was built in a studio on set.
No, it is not rare at all. Almost every small town has at least one karate studio. Most of them are Taekwondo.
In Karate, we mainly use Japanese words. Hence Karate Uniforms is called Gi (Gee)
When he lived in Michigan his martial art studio was called Fabiano's Karate. Now he's on the XMA Performance Team.