Rikishi, also known as sumo wrestlers, compete in different weight divisions.
Gyoji are the sumo referees who watch the matches.
Shimpan are the ringside judges who decides who wins.
Mawashi is the Japanese name for the thick belt that the wrestler's wear. Its typically used by opponents as a gripping mechanism to take down their match.
The ringed platform that the wrestlers fight inside of is called a dohyo.
Salt is also known to be used by wrestlers to purify themselves prior to beginning a match.
Matches are typically brief, lasting only a few seconds to a minute each round. There are no weight categories, meaning wrestlers of different sizes can compete against each other. A wrestler claims a win by forcing his opponent out of the ring or making him touch the ground with anybody part other than his feet. Certain moves are prohibited, including eye gouging, hair pulling, closed fist punching, choking, and grabbing of the groin.
Yori- Kiri: Front force out. Grasp the opponent by the front and push him straight out of the ring.
Oshi-Dashi: Push out. Smash into your opponent to knock him out of the ring.
Uwate-Nage: Outside belt throw. Get a grip on the belt and flip your opponent down as you pivot your hips.