bunk vs crap

bunk and crap both are nouns.

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

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

Other hyponyms of bunk include bull, bullshit, dogshit, horseshit, Irish bull, shit.

bunk (noun)	crap (noun)
a bed on a ship or train; usually in tiers	Obscene word for unacceptable behavior
a rough bed (as at a campsite)	obscene terms for feces
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

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