dispiritedness vs unhappiness

dispiritedness and unhappiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
dispiritedness	Yes	No	No	No
unhappiness	Yes	No	No	No

As nouns, unhappiness is a hypernym of dispiritedness; that is, unhappiness is a word with a broader meaning than dispiritedness:

Other hypernyms of dispiritedness include sadness.

dispiritedness (noun)	unhappiness (noun)
a feeling of low spirits	emotions experienced when not in a state of well-being
	state characterized by emotions ranging from mild discontentment to deep grief