The key difference is that freestyle wrestling involves all parts of the body while Greco-Roman does not allow contact below the waist.
Clay E
A clinch is designed to put an opponent into a hold. This gives the fighter more control of their opponent’s movements. Once in the clinch, they might want to land punches and kicks. Alternatively, being in a clinch position will enable the fighter to throw their opponent to the mat much easier.
The Gracie Combatives program, which teaches BJJ beginners basic self defense, takes 108 days. However, through the belt system, graduating from beginner to blue belt takes 2-3 years. However, those with prior grappling experience can achieve this much quicker as there is no minimum time frame.
Boxing is considered a martial art because it fits the definition of a martial art perfectly. It is a combat skill that can be used for self-defense, as a sport, or used by the military as a means of close-quarters combat. Boxing has systemized methods of training for the purpose of combat.
JJJ and BJJ share techniques such as joint locks, chokeholds, grappling and takedowns. However, BJJ does not teach the strikes or throws seen in JJJ. Both arts promote discipline, respect and integrity in their students, but the grading system varies and BJJ has a higher focus on competitions.
Even though it is not viewed as traditional martial art like Karate, wrestling fits into the definition of a martial art as a fighting system with codes, traditions, and a set of prescribed movements to best an opponent in combat. By this definition, wrestling is certainly a martial art!