adaptability vs pliancy

adaptability and pliancy both are nouns.

Word	Noun	Adjective	Verb	Adverb
adaptability	Yes	No	No	No
pliancy	Yes	No	No	No

As nouns, pliancy is a hyponym of adaptability; that is, pliancy is a word with a more specific, narrower meaning than adaptability:

adaptability: the ability to change (or be changed) to fit changed circumstances
pliancy: adaptability of mind or character

Other hyponyms of adaptability include flexibility, flexibleness, pliability, pliantness, suppleness.

adaptability (noun)	pliancy (noun)
the ability to change (or be changed) to fit changed circumstances	adaptability of mind or character
	the property of being pliant and flexible