lionhearted
Yes, the noun 'valour' (US spelling 'valor') is an abstract noun; a word for personal bravery in the face of danger; a word for a concept.
The abstract noun forms of the adjective valiant are valiantness and valiance.
The noun form for the adjective horrible is horribleness.
The noun form of the adjective 'prosperous' is prosperousness.A related noun form is prosperity.
The noun form of the adjective obedient is obedience.
noun form of religious
The noun form is punisher
Implication is the noun form of "imply."
The noun form for the adjective austere is austereness. Another noun form is austerity.
The noun form for the adjective glaring is glaringness. Another noun form is glare.
The noun form for the adjective acrimonious is acrimoniousness.A related noun form is acrimony.
noun = mud The noun form for the adjective muddy is muddiness.