swill vs provender

swill and provender both are nouns.

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

As nouns, provender is a hypernym of swill; that is, provender is a word with a broader meaning than swill:

swill: wet feed (especially for pigs) consisting of mostly kitchen waste mixed with water or skimmed or sour milk
provender: food for domestic livestock

Other hypernyms of swill include feed.

swill (noun)	provender (noun)
wet feed (especially for pigs) consisting of mostly kitchen waste mixed with water or skimmed or sour milk	a stock or supply of foods
	food for domestic livestock

swill (verb)	provender (verb)
drink large quantities of (liquid, especially alcoholic drink)
feed pigs