dysphoria vs discontentedness

dysphoria and discontentedness both are nouns.

Word	Noun	Adjective	Verb	Adverb
dysphoria	Yes	No	No	No
discontentedness	Yes	No	No	No

As nouns, discontentedness is a hypernym of dysphoria; that is, discontentedness is a word with a broader meaning than dysphoria:

Other hypernyms of dysphoria include depression, discontent, discontentment.

dysphoria (noun)	discontentedness (noun)
abnormal depression and discontent	a longing for something better than the present situation