Fervour is a related term of potency.
As nouns the difference between fervour and potency
is that fervour is an intense, heated emotion; passion, ardour while potency is strength.
fervour
English
Alternative forms
* (US spelling ) fervor
Noun
(British)
An intense, heated emotion; passion, ardour.
A passionate enthusiasm for some cause.
Heat.
potency
English
Noun
(potencies)
Strength
Power
The ability or capacity to perform something.
Related terms
* potence
* potent
* potentate
* potential
* potentiality