dandy vs gallant

dandy and gallant both are nouns.

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

As nouns, dandy and gallant are synonyms defined as:

dandy and gallant: a man who is much concerned with his dress and appearance

Other synonyms of dandy include beau, clotheshorse, dude, fashion plate, fop, sheik, swell.

dandy (noun)	gallant (noun)
a sailing vessel with two masts; a small mizzen is aft of the rudderpost	a man who attends or escorts a woman
a man who is much concerned with his dress and appearance	a man who is much concerned with his dress and appearance

dandy (adjective)	gallant (adjective)
excellent	unflinching in battle or action
	being attentive to women like an ideal knight
	having or displaying great dignity or nobility
	lively and spirited