dejection vs poop

dejection and poop both are nouns.

Word	Noun	Adjective	Verb	Adverb
dejection	Yes	No	No	No
poop	Yes	No	No	No

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

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

dejection (noun)	poop (noun)
a state of melancholy depression	the rear part of a ship
solid excretory product evacuated from the bowels	slang terms for inside information
	a stupid foolish person
	obscene terms for feces