shit vs doodly-squat

shit and doodly-squat both are nouns.

Word	Noun	Adjective	Verb	Adverb
shit	Yes	No	Yes	No
doodly-squat	Yes	No	No	No

As nouns, shit and doodly-squat are synonyms defined as:

Other synonyms of shit include diddley, diddly-shit, diddly-squat, diddly, diddlyshit, diddlysquat, jack, squat.

shit (noun)	doodly-squat (noun)
something of little value	a small worthless amount
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

shit (verb)	doodly-squat (verb)
have a bowel movement
give away information about somebody