buoyancy vs oomph

buoyancy

• Resilience or cheerfulness. 

• The ability of an object to stay afloat in a fluid. 

• The upward force on a body immersed or partly immersed in a fluid. 

oomph

• Strength, power, passion or effectiveness; clout. 

• A bassy grunting or thudding sound. 

• Sex appeal. 

• To produce a bassy grunting or thudding sound.