soft drink vs drink

soft drink and drink both are nouns.

Word	Noun	Adjective	Verb	Adverb
soft drink	Yes	No	No	No
drink	Yes	No	Yes	No

As nouns, drink is a hypernym of soft drink; that is, drink is a word with a broader meaning than soft drink:

Other hypernyms of soft drink include beverage, drinkable, potable.

soft drink (noun)	drink (noun)
nonalcoholic beverage (usually carbonated)	the act of drinking alcoholic beverages to excess
	the act of swallowing
	any liquid suitable for drinking
	a single serving of a beverage
	any large deep body of water

soft drink (verb)	drink (verb)
	be fascinated or spell-bound by; pay close attention to
	take in liquids
	consume alcohol
	drink excessive amounts of alcohol; be an alcoholic
	propose a toast to