As nouns the difference between act and potency
is that act is (countable) something done, a deed while potency is strength.
As a verb act
is to do something.
act
English
Noun
(
en noun)
A certain standardized college admissions test in the United States, originally called the (term).
*
Coordinate terms
* (American College Test) SAT , GMAT , MCAT , DAT
potency
English
Noun
(potencies)
Strength
Power
The ability or capacity to perform something.
Related terms
* potence
* potent
* potentate
* potential
* potentiality