Black belt sport is a term used to describe martial arts that require a high level of skill and dedication. Karate (6 letters) is a Japanese martial art that focuses on striking techniques, such as punches and kicks. Judo (4 letters) is a Japanese martial art that emphasizes throws and grappling techniques. Sash (4 letters) is a long strip of cloth worn around the waist or over the shoulder as part of a martial arts uniform. Chop (4 letters) is a martial arts technique that involves a quick, downward strike with the hand. All of these martial arts are considered black belt sports, and require a great deal of practice and dedication to master.