coxcomb vs clotheshorse

coxcomb and clotheshorse both are nouns.

Word	Noun	Adjective	Verb	Adverb
coxcomb	Yes	No	No	No
clotheshorse	Yes	No	No	No

As nouns, clotheshorse is a hypernym of coxcomb; that is, clotheshorse is a word with a broader meaning than coxcomb:

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

Other hypernyms of coxcomb include beau, dandy, dude, fashion plate, fop, gallant, sheik, swell.

coxcomb (noun)	clotheshorse (noun)
the fleshy red crest on the head of the domestic fowl and other gallinaceous birds	a framework on which to hang clothes (as for drying)
a cap worn by court jesters; adorned with a strip of red	a man who is much concerned with his dress and appearance
a conceited dandy who is overly impressed by his own accomplishments