Fervour is a related term of forcefulness.
As nouns the difference between fervour and forcefulness
is that fervour is an intense, heated emotion; passion, ardour while forcefulness is the characteristic or quality of being forceful.
fervour
English
Alternative forms
* (US spelling ) fervor
Noun
(British)
An intense, heated emotion; passion, ardour.
A passionate enthusiasm for some cause.
Heat.
forcefulness
English
Noun
(-)
The characteristic or quality of being forceful