ROGET THESAURUS
Fluidity
N
fluidity, liquidity, liquidness,
gaseity, fluid, inelastic fluid, liquid, liquor, lymph, humor, juice, sap, serum, blood, serosity, gravy, rheum, ichor, sanies, chyle, solubility, solubleness, hydrology, hydrostatics, hydrodynamics, liquid, fluid, serous, juicy, succulent, sappy, ichorous, fluent, liquefied, uncongealed, soluble.
Gaseity
N
gaseity, vaporousness, flatulence, flatulency, volatility, aeration, aerification, elastic fluid, gas, air, vapor, ether, steam, essence, fume, reek, effluvium, flatus, cloud, ammonia, ammoniacal gas, volatile alkali, vacuum, partial vacuum, pneumatics, pneumatostatics, aerostatics, aerodynamics, gasmeter, gasometer, air bladder, swimming bladder, sound, (of a fish), gaseous, aeriform, ethereal, aerial, airy, vaporous, volatile, evaporable, flatulent.