As nouns the difference between potency and potentness
is that potency is strength while potentness is the quality or state of being potent; powerfulness; potency; efficacy.
potency
English
Noun
(potencies)
Strength
Power
The ability or capacity to perform something.
Related terms
* potence
* potent
* potentate
* potential
* potentiality
potentness
English
Noun
(-)
The quality or state of being potent; powerfulness; potency; efficacy.