crap vs stool

crap and stool both are nouns.

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

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

Other hypernyms of crap include BM, dejection, faecal matter, faeces, fecal matter, feces, ordure.

As verbs, crap and stool are synonyms defined as:

Other synonyms of crap include ca-ca, defecate, make, shit, take a crap, take a shit.

crap (noun)	stool (noun)
Obscene word for unacceptable behavior	a simple seat without a back or arms
obscene terms for feces	a plumbing fixture for defecation and urination
	(forestry) the stump of a tree that has been felled or headed for the production of saplings
	solid excretory product evacuated from the bowels

crap (verb)	stool (verb)
have a bowel movement	have a bowel movement
	grow shoots in the form of stools or tillers
	react to a decoy, of wildfowl
	lure with a stool, as of wild fowl