dude vs dandy

dude and dandy both are nouns.

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

As nouns, dude and dandy are synonyms defined as:

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

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

dude (noun)	dandy (noun)
a man who is much concerned with his dress and appearance	a sailing vessel with two masts; a small mizzen is aft of the rudderpost
an informal form of address for a man	a man who is much concerned with his dress and appearance

dude (adjective)	dandy (adjective)
	excellent