What is another word for "helium"?

Roget's Thesaurus (1911) lists these synonyms for "helium": air, airy, astatic, balloon, barm, bubble, buoy, buoyancy, buoyant, cobweb, cold, convection, cooler, cork, damper, deep, down, draft, dry, dust, ether, ethereal, feather, ferment, float, floating, flue, freeze, freezer, freezing, frigidarium, gossamer, gossamery, hot, hydrogen, ice, imponderability, imponderable, imponderous, laboratory.