beau vs dandy

beau and dandy both are nouns.

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

As nouns, beau and dandy are synonyms defined as:

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

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

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

beau (adjective)	dandy (adjective)
	excellent