serving vs drink

serving and drink both are nouns.

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

As nouns, drink is a hyponym of serving; that is, drink is a word with a more specific, narrower meaning than serving:

serving (noun)	drink (noun)
the act of delivering a writ or summons upon someone	the act of drinking alcoholic beverages to excess
an individual quantity of food or drink taken as part of a meal	the act of swallowing
	any liquid suitable for drinking
	a single serving of a beverage
	any large deep body of water

serving (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