Judo: a relatively modern Japanese martial art (created in 1882). The goal of judo is to either throw or takedown one’s opponent to the ground and immobilize or subdue them with a grappling maneuver, joint lock, strangle hold, or choke. Strikes and thrusts by hands and feet or weapons are only allowed in pre-arranged forms (kata), and are not allowed in competition or free practice.

Jujitsu: a Japanese martial art for defeating an armed and armored opponent in which one uses no weapon, or only a short weapon. Practitioners neutralize an enemy with pins, joint locks, and throws by using an attacker’s energy against him, rather than directly opposing it (as with other martial arts such as karate). There are five main areas or arts of training: blocking, fulcrum throw, non-fulcrum throw, escaping, and striking.