faeces vs fecal matter

faeces and fecal matter both are nouns.

Word	Noun	Adjective	Verb	Adverb
faeces	Yes	No	No	No
fecal matter	Yes	No	No	No

As nouns, faeces and fecal matter are synonyms defined as:

faeces and fecal matter: solid excretory product evacuated from the bowels

Other synonyms of faeces include BM, dejection, faecal matter, feces, ordure, stool.

faeces (noun)	fecal matter (noun)
solid excretory product evacuated from the bowels	solid excretory product evacuated from the bowels