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