A teacher of karate is called Sensei. A really high ranked instructor who has earned the respect of their students may be referred to as Hanshi. A traditional martial artist is humble and will never ask to be called by their title, it is up to the other students to teach them the proper terminology. We call our Grandmaster (10th Dan) Sensei when talking with him, but refer to him as Hanshi or Grandmaster when we are talking to others.
A blackbelt is considered an expert in karate. He/she is called Sempai. However you have to attain 3rd Dan to become an instructor.
in engilsh a student.In karate a karate-ka
The place to learn karate is called the dojo.
In Karate, we mainly use Japanese words. Hence Karate Uniforms is called Gi (Gee)
a belt or a karate belt in Japanese is called obi
The Karate costume/uniform is called "Gi".
Karate is practiced in bare feet. The karate uniform is called a gi.
an expert on China is called a sinologist.