For a power clean, the bar starts (on the floor) and ends (in the rack position) the same as with a clean, except that you are not required to perform a full squat. A partial squat, or no squat at all, is allowed with a power clean.
Now, if the WOD calls for a clean and jerk, there is no requirement that you perform a full squat. If you can power clean the prescribed weight, that’s perfectly fine. But if you’re going for a max weight clean and jerk, you’ll probably do a squat, because it’s easier to squat the weight up to the rack position than it is to power clean it.
Clean and jerk, in a CrossFit gym, basically means taking a barbell from ground to overhead in any way possible, as long as you stop for at least a moment in the rack position along the way.
We’ll talk about the snatch later…