guff vs shit

guff and shit both are nouns.

Word	Noun	Adjective	Verb	Adverb
guff	Yes	No	No	No
shit	Yes	No	Yes	No

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

Other hyponyms of guff include bull, bullshit, crap, dogshit, horseshit, Irish bull.

guff (noun)	shit (noun)
unacceptable behavior (especially ludicrously false statements)	something of little value
	Obscene word for unacceptable behavior
	insulting terms of address for people who are stupid or irritating or ridiculous
	a coarse term for defecation
	a small worthless amount
	obscene terms for feces

guff (verb)	shit (verb)
	have a bowel movement
	give away information about somebody