There are three basic categories of waza (技, techniques) in judo: nage-waza (投げ技, throwing techniques), katame-waza (固技, grappling
techniques) and atemi-waza (当て身技, striking techniques). Judo is most known for nage-waza and katame-waza.
Judo practitioners typically devote a portion of each practice session to ukemi (受け身, break-falls), in order that nage-waza can be practiced without significant
risk of injury. Several distinct types of ukemi exist, including ushiro ukemi (後ろ受身, rear breakfalls); yoko ukemi (横受け身, side
breakfalls); mae ukemi (前受け身, front breakfalls); and zenpo kaiten ukemi (前方回転受身, rolling breakfalls).