lightness vs. weight

Lightness and weight both relate to how heavy something is, but they are used differently. Weight is the measure of the force gravity exerts on an object, usually expressed in units like pounds or kilograms. Lightness, on the other hand, is a comparative perception of how heavy or easy a load feels, often influenced by the object's weight, shape, and size. For example, a large but lightweight balloon feels less heavy than a small, dense rock, even if both weigh the same. Essentially, weight is an objective measurement, while lightness is a subjective experience or perception of that weight.