n. 25B6; noun
the drum's buoyancy : ABILITY TO FLOAT, lightness, floatability.
her natural buoyancy : CHEERFULNESS, happiness, light-heartedness, joy, bounce, sunniness, breeziness, jollity; liveliness, ebullience, high spirits, vivacity, vitality, verve, sparkle, zest; optimism; informal pep.
the buoyancy of the market : VIGOUR, strength, resilience, growth, improvement, expansion.