dandy vs fop

dandy and fop both are nouns.

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

As nouns, dandy and fop are synonyms defined as:

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

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

dandy (noun)	fop (noun)
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

dandy (adjective)	fop (adjective)
excellent