valiance vs heroism

valiance and heroism both are nouns.

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

As nouns, valiance and heroism are synonyms defined as:

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

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

valiance (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)