This question just got up when i read a post over training and tech. watever. So yea give out ur idea. or you can just agree with me or disagree. IMO PUSH: shots that are above the the shoulder height and you'll hit the bird going down with lil arc or no arc. Drive: anything that is fast straight shots those have little upward direction.
In my opinion, a drive is a flat hard shot where more force is used and a push is softer, more of a direct placement shot A gud push will definately make them move as it is always hit into an open area whereas a drive cud be hit into an open area or directly at them to force a weak return.
Pushes and drives are both "flat" shots. The angle may be completely flat, somewhat downwards, or somewhat upwards -- but not steeply downwards like a smash/drop, and not steeply upwards like a lift. The difference between them is that a drive is a fast, sharp shot that travels into the rear part of the midcourt (or even into the rearcourt); whereas a push is a softer shot that travels into the front part of the midcourt (typically a short distance beyond the service line). Pushes and drives can be played from varying positions, such as from the net, or when defending against the smash.