Question

difference between buoyancy and buoyant force

Answer 1

there isnt any differnce both mean the same-the upward thrust or force exerted in fluids like air or water.

Answer 2

buoyancy is the phenomenon where , when an object is partially or fully immersed it experiences an upward force called the buoyant force and this whole phenomenon is called to be as buoyancy .
and,
the buoyant force is the upthrust force , exerted by a fluid on an object 

i hope it helps.............