Imagine an object is resting upon the floor. The object is pushing the floor with a force mg, which is vertically downward. The floor is also pushing the object back with the same magnitude of force but it is vertically upward. My question is: which one of these force is called weight? My answer is the second one. Because we say that a free falling body is weightless. And then normal force doesn't act on the body when it is in free-fall. Is my answer correct?