Loudness . . . . . Mass Bulky or massive. Its amplitude or area spread is the dominant physical characteristic. Objects whose surfaces are expansive rather than attenuated cannot be said to possess limbs. Mass objects are not made up of a series of jointed or bifurcated limbs, and consequently both their structure and the shape of their spatial context are less clearly articulated.
All substantial things have mass.
Objects of mass do not automatically have skeletons. Basic characteristic is the mass and space displacement, which we perceive though the expansion of the plane and curved surfaces. It is the movement and spread of the larger surface areas which first intrude on our perception. Your sense of greater or lesser mass is dependent upon the relative expanse of surface area presented, and on the degree of continuity of surface flow. Volume A. Solid Volume - Mass in terms of the expansive spread of material surfaces, and the solidity and weight which necessarily accompany such amplitude.