Karate is a Japanese martial arts form. The word karate is a combination kara, meaning empty, and te, meaning hand; which translates to "empty hand" (empty hand combat). This style of martial arts is a "defensive" (never attack first) style and was brought to Japan in 1922 by Gichin Funakoshi (1868-1957), the father of modern karate. Today there are four main styles of karate in Japan: Shotokan, Goju-ryu, Shito-ryu, and Wado-ryu.
Tae Kwon Do
Tae Kwon Do is a Korean martial arts form is a combat sport. Tae Kwon Do is more representative of kicking than Karate with more complex kicking combinations as well. "Tae" means to destroy with the feet; "Kwon" means to strike or smash with the hand; and finally, "do" means "path" or "way". Thus, taekwondo can be translated as "the way of the foot and fist".
Hapkido is a Korean martial art. Identifiable by joint locks, throws, and aggressive kicking techniques, it is unique among Korean martial arts (Taekwondo, Tang Soo Do) in its emphasis on deflecting an opponent’s attacks instead of forceful blocking. It was fashioned as a way to defend against, and overcome, an attacker with skill in a wide range of martial arts. With roots in Aiki-jujitsu, Hapkido adds striking and punching to joint-locks, throws, and grappling, making it one of the original mixed martial arts.
Muay Thai is a fighting technique originating is the National sport of Thailand. Known as the science of eight limbs, Muay Thai kickboxing uses the knees and elbows as well as kicks and punches. Just about all parts of the body are considered a applicable and any part of the body, except the head, may be used to strike an opponent.