The sport that has distinct variations like freestyle and Greco-Roman is wrestling. These styles differ primarily in the techniques allowed during competition, particularly in how opponents can engage with each other. Freestyle wrestling permits the use of the legs for both offense and defense and allows holds above and below the waist, while Greco-Roman restricts holds to the upper body. Wrestlers specialize in one of these styles, and both are popular in the Olympics, showcasing athletes' strength, technique, and athletic prowess.