white wine vs wine

white wine and wine both are nouns.

Word	Noun	Adjective	Verb	Adverb
white wine	Yes	No	No	No
wine	Yes	No	Yes	No

As nouns, wine is a hypernym of white wine; that is, wine is a word with a broader meaning than white wine:

white wine: pale yellowish wine made from white grapes or red grapes with skins removed before fermentation
wine: fermented juice (of grapes especially)

Other hypernyms of white wine include vino.

white wine (noun)	wine (noun)
pale yellowish wine made from white grapes or red grapes with skins removed before fermentation	a red as dark as red wine
	fermented juice (of grapes especially)

white wine (verb)	wine (verb)
	drink wine
	treat to wine