diddlysquat vs diddly-shit

diddlysquat and diddly-shit both are nouns.

Word	Noun	Adjective	Verb	Adverb
diddlysquat	Yes	No	No	No
diddly-shit	Yes	No	No	No

As nouns, diddlysquat and diddly-shit are synonyms defined as:

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

diddlysquat (noun)	diddly-shit (noun)
a small worthless amount	a small worthless amount