Brazilian Jiu-Jitsu is a martial art and combat sport system that focuses on grappling and especially ground fighting.
BJJ promotes the concept that a smaller, weaker person can successfully defend themselves against a bigger, stronger, heavier assailant by using proper technique, leverage, and most notably, taking the fight to the ground, and then applying joint locks and choke holds to defeat the opponent.
Brazilian Jiu-Jitsu was developed from Kodokan judo ground fighting (newaza) fundamentals that were taught by a number of Japanese individuals including Takeo Yano, Mitsuyo Maeda, Soshihiro Satake, and Isao Okano. Brazilian Jiu-Jitsu eventually came to be its own defined combat sport through the innovations, practices, and adaptation of judo.
Submission Wrestling or Submission Fighting is a general term for martial arts and combat sports that focus on clinch and ground fighting with the aim of obtaining a submission through the use of submission holds. The term "submission wrestling" usually refers only to the form of competition and training that does not use a "Gi" or "combat kimono".
Submission wrestlers or grapplers are also known for using submission techniques normally banned in other arts or competitions such as heel hooks, toe holds, wrist locks.
Muay Thai or literally Thai boxing is a combat sport of Thailand that uses stand-up striking along with various clinching techniques. This discipline is known as the "art of eight limbs" as it is characterized by the combined use of fists, elbows, knees, and shins.
Muay Thai became widespread internationally in the late 20th to 21st century, when westernized practitioners from Thailand began competing in kickboxing, mixed rules matches, as well as matches under Muay Thai rules around the world.
Muay Thai is often a fighting art of attrition, where opponents exchange blows with one another. Almost all techniques in Muay Thai use the entire body movement, rotating the hip with each kick, punch, elbow and block.