crap vs rot

crap and rot both are nouns.

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

As nouns, rot is a hypernym of crap; that is, rot is a word with a broader meaning than crap:

Other hypernyms of crap include buncombe, bunk, bunkum, guff, hogwash.

crap (noun)	rot (noun)
Obscene word for unacceptable behavior	unacceptable behavior (especially ludicrously false statements)
obscene terms for feces	(biology) the process of decay caused by bacterial or fungal action
	a state of decay usually accompanied by an offensive odor

crap (verb)	rot (verb)
have a bowel movement	become physically weaker
	break down