potency vs powerfulness

potency and powerfulness both are nouns.

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

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

Other hypernyms of potency include power.

potency (noun)	powerfulness (noun)
capacity to produce strong physiological or chemical effects	possession of controlling influence
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