Weightlifting, also called Olympic weightlifting or Olympic style weightlifting, is a sport in which participants attempt a maximum weight single lift of a barbell loaded with weight plates. The two lifts currently competed are the clean and jerk and the snatch. The compound word "weightlifting" is often used incorrectly to refer to weight training. In comparison with powerlifting which tests limit strength (with or without lifting aids), weightlifting tests ballistic limits with smaller weights such that the lifts must be executed more quickly and with more mobility because of a greater range of motion during the lifts. While there are relatively few competitive Olympic lifters, the lifts and their components are commonly used by elite athletes to train for explosive and functional strength.