dude vs cockscomb

dude and cockscomb both are nouns.

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

As nouns, cockscomb is a hyponym of dude; that is, cockscomb is a word with a more specific, narrower meaning than dude:

dude: a man who is much concerned with his dress and appearance
cockscomb: a conceited dandy who is overly impressed by his own accomplishments

Other hyponyms of dude include coxcomb, macaroni.

dude (noun)	cockscomb (noun)
a man who is much concerned with his dress and appearance	the fleshy red crest on the head of the domestic fowl and other gallinaceous birds
an informal form of address for a man	a cap worn by court jesters; adorned with a strip of red
	a conceited dandy who is overly impressed by his own accomplishments
	garden annual with featherlike spikes of red or yellow flowers