valorousness vs heroism

valorousness and heroism both are nouns.

Word	Noun	Adjective	Verb	Adverb
valorousness	Yes	No	No	No
heroism	Yes	No	No	No

As nouns, valorousness and heroism are synonyms defined as:

valorousness and heroism: the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle)

Other synonyms of valorousness include gallantry, valiance, valiancy, valor, valour.

valorousness (noun)	heroism (noun)
the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle)	the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle)