dude vs sheik

dude and sheik both are nouns.

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

As nouns, dude and sheik are synonyms defined as:

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

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

dude (noun)	sheik (noun)
a man who is much concerned with his dress and appearance	the leader of an Arab village or family
an informal form of address for a man	a man who is much concerned with his dress and appearance