valiancy vs gallantry

valiancy and gallantry both are nouns.

Word	Noun	Adjective	Verb	Adverb
valiancy	Yes	No	No	No
gallantry	Yes	No	No	No

As nouns, valiancy and gallantry are synonyms defined as:

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

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

valiancy (noun)	gallantry (noun)
the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle)	polite attentiveness to women
	the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle)
	courtesy towards women