valiance vs valour

valiance and valour both are nouns.

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

As nouns, valiance and valour are synonyms defined as:

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

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

valiance (noun)	valour (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)