morning dress vs dress

morning dress and dress both are nouns.

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

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

Other hypernyms of morning dress include frock.

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

Other hypernyms of morning dress include attire, garb.

morning dress (noun)	dress (noun)
a woman's informal dress for housework	a one-piece garment for a woman; has skirt and bodice
formal attire for men during the daytime	clothing of a distinctive style or for a particular occasion
	clothing in general

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

morning dress (verb)	dress (verb)
	put on clothes
	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