possibility vs potency

possibility and potency both are nouns.

Word	Noun	Adjective	Verb	Adverb
possibility	Yes	No	No	No
potency	Yes	No	No	No

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

possibility (noun)	potency (noun)
a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena	capacity to produce strong physiological or chemical effects
a possible alternative	the power or right to give orders or make decisions
a future prospect or potential	the state of being potent; a male's capacity to have sexual intercourse
capability of existing or happening or being true	the inherent capacity for coming into being