courageous vs gallant

courageous is not a noun while gallant is a noun.

Word	Noun	Adjective	Verb	Adverb
courageous	No	Yes	No	No
gallant	Yes	Yes	No	No

courageous (noun)	gallant (noun)
	a man who attends or escorts a woman
	a man who is much concerned with his dress and appearance

courageous (adjective)	gallant (adjective)
possessing or displaying courage; able to face and deal with danger or fear without flinching	unflinching in battle or action
	being attentive to women like an ideal knight
	having or displaying great dignity or nobility
	lively and spirited