low-spiritedness vs dejectedness

low-spiritedness and dejectedness both are nouns.

Word	Noun	Adjective	Verb	Adverb
low-spiritedness	Yes	No	No	No
dejectedness	Yes	No	No	No

As nouns, low-spiritedness and dejectedness are synonyms defined as:

Other synonyms of low-spiritedness include dispiritedness, downheartedness, lowness.

low-spiritedness (noun)	dejectedness (noun)
a feeling of low spirits	a feeling of low spirits