Pick and place
Picking up an object and putting it down in a defined spot.
It sounds trivial and it is the basis of most robot arm work: loading a machine, sorting parcels, packing food into trays. When the objects always arrive in the same position, it is easy. When they lie in a pile, the robot needs vision to find a good grasp.
Two numbers matter: cycle time (how many picks per minute) and the success rate on your real items. Ask for a test with your own products, because a demo with neat plastic parts says little about wet bags or deformable packaging.