Isshin-ryu (一心流) is a style of Okinawan karate founded by Shimabuku Tatsuo around 1953. Isshinryu karate was brought together through a mix of Shorin-ryu karate and Goju-ryu karate. The name means, "one heart" or "one mind" way. The style, while not very popular in Okinawa, spread to the United States through returning Marines.
This style consists of punches and open hand striking that stay in close to the body and any kicks are almost always aimed toward the lower body.
Judo is a martial art that originated in Japan that was developed from ju-jitsu. Judo was founded by Dr. Jigoro Kano in 1882. Judo literally means "Gentle Way". Judo consists mainly of throws, armbars, leg and ankle locks, and restraint techniques. Practitioners of Judo are called Judokas.
Ju-jitsu is a Japanese art that deals with fighting in close quarters with your opponent. Ju-jitsu is a grappling art in which you use chokes, strangulation techniques, wrist locks, arm bars, leg and ankle locks, throws and takedowns in order to disable or disarm an opponent. Ju-jitsu is an optional program of study at KI.
Karate or karate-dō (空手 or 空手道, "the way of the empty hand") is a martial art of Okinawan origin. Karate is a combination of basic Okinawan fighting arts and Southern Chinese martial arts. In about 1921it was introduced to the Japanese from Okinawa by practitioners who moved to mainland Japan during the early 1900s. One who practices karate is sometimes referred to as a karate-ka.
Karate emphasizes explosive striking techniques such as punching, kicking, open hand strikes, knee strikes and elbow strikes. Grappling, joint locks, throwing, and pressure point fighting are included in advanced student training.
Tae Kwon Do is the most popular of the Korean martial arts and is the Korean national sport. It is also one of the world's most commonly practiced sports. In Korean, Tae means "to kick"; Kwon means "to punch"; and Do means "way" or "art". Taekwondo is loosely translated as "the art of kicking and punching". In general Tae Kwon Do consists of mainly kicks such as jump kicks, spin kicks and flying kicks in order disable an opponent from a distance.