Hardness is a related term of brawniness.
As nouns the difference between hardness and brawniness
is that hardness is the quality of being hard while brawniness is the state of being brawny or having brawn.
hardness
English
Noun
The quality of being hard.
An instance of this quality; hardship.
See also
* hardiness
References
*
brawniness
English
Noun
(-)
The state of being brawny or having brawn.