feces vs dog shit

feces and dog shit both are nouns.

Word	Noun	Adjective	Verb	Adverb
feces	Yes	No	No	No
dog shit	Yes	No	No	No

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

Other hyponyms of feces include dog do, dog turd, doggy do, crap, dirt, poop, shit, shite, turd, droppings, dung, muck, meconium, melaena, melena.

feces (noun)	dog shit (noun)
solid excretory product evacuated from the bowels	fecal droppings from a dog