costume vs dress

costume and dress both are nouns.

Word	Noun	Adjective	Verb	Adverb
costume	Yes	No	Yes	No
dress	Yes	Yes	Yes	No

As nouns, dress is a hypernym of costume; that is, dress is a word with a broader meaning than costume:

Other hypernyms of costume include attire, garb.

As nouns, dress is a hypernym of costume; that is, dress is a word with a broader meaning than costume:

Other hypernyms of costume include attire, garb.

As nouns, dress is a hypernym of costume; that is, dress is a word with a broader meaning than costume:

costume: unusual or period attire not characteristic of or appropriate to the time and place
dress: clothing of a distinctive style or for a particular occasion

Other hypernyms of costume include attire, garb.

As nouns, dress is a hypernym of costume; that is, dress is a word with a broader meaning than costume:

costume: the prevalent fashion of dress (including accessories and hair style as well as garments)
dress: clothing of a distinctive style or for a particular occasion

Other hypernyms of costume include attire, garb.

As verbs, dress is a hypernym of costume; that is, dress is a word with a broader meaning than costume:

Other hypernyms of costume include apparel, clothe, enclothe, fit out, garb, garment, habilitate, raiment, tog.

costume (noun)	dress (noun)
the attire worn in a play or at a fancy dress ball	a one-piece garment for a woman; has skirt and bodice
the attire characteristic of a country or a time or a social class	clothing of a distinctive style or for a particular occasion
unusual or period attire not characteristic of or appropriate to the time and place	clothing in general
the prevalent fashion of dress (including accessories and hair style as well as garments)

costume (adjective)	dress (adjective)
	(of an occasion) requiring formal clothes
	suitable for formal occasions

costume (verb)	dress (verb)
dress in a costume	put on clothes
furnish with costumes; as for a film or play	provide with clothes or put clothes on
	apply a bandage or medication to
	arrange attractively
	dress or groom with elaborate care
	give a neat appearance to
	dress in a certain manner
	kill and prepare for market or consumption
	convert into leather
	put a dressing on
	put a finish on
	cultivate, tend, and cut back the growth of
	provide with decoration
	cut down rough-hewn (lumber) to standard thickness and width
	decorate (food), as with parsley or other ornamental foods
	arrange in ranks