Snatch, Clean, Jerk, Power, Squat, Split, Hang... weird sounding words that are used in the world of olympic weightlifting and CrossFit.
Quiet often, there is a lot of confusion around what these words mean and how they effect the lift. I.e. a hang clean is different to a power clean, a power clean is different to a squat clean (or just "clean").
So, i'm its time to clear things up, and to make sure you understand what the difference is between a hang variation and a power variation.
The movement in which the barbell is taken from the floor and receive at on the front of the shoulders.
2 type you will see in CrossFit, the power clean (see below for "power" definition) or the "squat clean" (commonly referred to as just the "clean")
The movement in which the barbell is taken from the floor and received in the overhead position.
2 type you will see in CrossFit, the power snatch (see below for "power" definition) or the "squat snatch" (commonly referred to as just the "snatch")
The jerk is often combined with the Clean and is the movement that takes the barbell from the shoulder to the overhead position.
This can be done via the split jerk or the push/power jerk.
Hang refers to a starting position for a lift with the bar above floor level, e.g. Hang Clean. At what height a hang lift is started needs to specified, such as mid-thigh, knee or below the knee.
In CrossFit, we usually use a hang position anywhere above the knee.
The hook grip is used in the pull of the snatch and clean to ensure a secure grip during the aggressive acceleration of the bar. The lifter first wraps the thumb around the bar, then grips the thumb with usually the first and second fingers and pulls it tightly around the bar.
The term power refers to a receiving position of the snatch, clean or jerk in a partial squat (e.g. power snatch). Most commonly the cut-off point is a parallel squat—if the lifter receives and stops the bar before squatting below parallel, the lift qualifies as power snatch, power clean or power jerk. It is also sometimes defined as no more than a 90-degree bend in the knees.
The split is the receiving position for the split jerk, which is a partial-depth lunge. Also used in the split snatch and split clean.
Hopefully this help clears some things up and coaches wont be asked if the hang clean should be taken from the floor or if you need to squat on the power snatch ;)
*terminology taken from Catalyst Athletic