garbage vs bunk

garbage and bunk both are nouns.

Word	Noun	Adjective	Verb	Adverb
garbage	Yes	No	No	No
bunk	Yes	No	Yes	No

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

garbage (noun)	bunk (noun)
a receptacle where waste can be discarded	a bed on a ship or train; usually in tiers
a worthless message	a rough bed (as at a campsite)
food that is discarded (as from a kitchen)	beds built one above the other
	a long trough for feeding cattle
	unacceptable behavior (especially ludicrously false statements)
	a message that seems to convey no meaning

garbage (verb)	bunk (verb)
	flee; take to one's heels; cut and run
	provide with a bunk
	avoid paying