turd vs faeces

turd and faeces both are nouns.

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

As nouns, faeces is a hypernym of turd; that is, faeces is a word with a broader meaning than turd:

Other hypernyms of turd include BM, dejection, faecal matter, fecal matter, feces, ordure, stool.

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