dude vs fashion plate

dude and fashion plate both are nouns.

Word	Noun	Adjective	Verb	Adverb
dude	Yes	No	No	No
fashion plate	Yes	No	No	No

As nouns, dude and fashion plate are synonyms defined as:

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

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

dude (noun)	fashion plate (noun)
a man who is much concerned with his dress and appearance	a plate illustrating the latest fashion in dress
an informal form of address for a man	a man who is much concerned with his dress and appearance