potency vs potent

potency is a noun but potent is not a noun.

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

potency (noun)	potent (noun)
capacity to produce strong physiological or chemical effects
the power or right to give orders or make decisions
the state of being potent; a male's capacity to have sexual intercourse
the inherent capacity for coming into being

potency (adjective)	potent (adjective)
	having a strong physiological or chemical effect
	(of a male) capable of copulation
	having great influence
	having or wielding force or authority