Karate is a martial art that originated in Japan, and there are many synonyms that describe this form of self-defense. One synonym that is commonly used is "kung fu," which is a Chinese martial art that shares many similarities with karate. Another popular synonym is "taekwondo," which is a Korean martial art that focuses on kicking and striking techniques. "Aikido" is another synonym that is often used, and this martial art is based on using an opponent's energy against them. "Judo" and "jujutsu" are also synonyms for karate, and both of these martial arts involve grappling and throwing techniques. No matter what synonym you use, all of these martial arts require discipline, practice, and dedication to master.