drink vs swill

drink and swill both are nouns.

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

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

drink (noun)	swill (noun)
the act of drinking alcoholic beverages to excess	wet feed (especially for pigs) consisting of mostly kitchen waste mixed with water or skimmed or sour milk
the act of swallowing
any liquid suitable for drinking
a single serving of a beverage
any large deep body of water

drink (verb)	swill (verb)
be fascinated or spell-bound by; pay close attention to	drink large quantities of (liquid, especially alcoholic drink)
take in liquids	feed pigs
consume alcohol
drink excessive amounts of alcohol; be an alcoholic
propose a toast to