faeces vs turd

faeces and turd both are nouns.

Word	Noun	Adjective	Verb	Adverb
faeces	Yes	No	No	No
turd	Yes	No	No	No

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

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

faeces (noun)	turd (noun)
solid excretory product evacuated from the bowels	obscene terms for feces