valor vs valour

valor and valour both are nouns.

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

As nouns, valor and valour are synonyms defined as:

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

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

valor (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)