dejection vs fecal matter

dejection and fecal matter both are nouns.

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

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

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

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

dejection (noun)	fecal matter (noun)
a state of melancholy depression	solid excretory product evacuated from the bowels
solid excretory product evacuated from the bowels