dirt vs dejection

dirt and dejection both are nouns.

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

As nouns, dejection is a hypernym of dirt; that is, dejection is a word with a broader meaning than dirt:

Other hypernyms of dirt include BM, faecal matter, faeces, fecal matter, feces, ordure, stool.

dirt (noun)	dejection (noun)
disgraceful gossip about the private lives of other people	a state of melancholy depression
anything regarded as making something unclean	solid excretory product evacuated from the bowels
the part of the earth's surface consisting of humus and disintegrated rock
obscene terms for feces

dirt (adjective)	dejection (adjective)
(of roads) not leveled or drained; unsuitable for all year travel