Semantic pedantry here: power-lifting[1] is not an Olympic sport. Weight-lifting[2] is.
Olympic weight-lifting is constituted of the snatch and the clean and jerk. Power-lifting is normally constituted of the "big three" lifts: bench press, squat, and deadlift.
There is also an informally defined idea of "power-building"[3] which is sort of a cross between bodybuilding and power-lifting.
And then there's crossfit, and strongman, and ... Anyway, enough said about all of that. :-)