What is another word for "buoyancy"?

Roget's Thesaurus (1911) lists these synonyms for "buoyancy": affiance, air, airy, anchor, anticipation, aspiration, assumption, assurance, astatic, axial, axis, azygous, back, backbone, baleen, balloon, balm, barm, beam, belief, bit, blue, bottom, bounce, box, bright, bring, bubble, buoy, buoyant, caoutchouc, center, central, centrality, centralization, centralize, centrally, centrical, cheer, clear.