potency vs possibility

potency and possibility both are nouns.

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

As nouns, possibility is a hypernym of potency; that is, possibility is a word with a broader meaning than potency:

Other hypernyms of potency include possibleness.

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