lowness vs low-spiritedness

lowness and low-spiritedness both are nouns.

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

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

Other synonyms of lowness include dejectedness, dispiritedness, downheartedness.

lowness (noun)	low-spiritedness (noun)
the quality of being low; lacking height	a feeling of low spirits
a low or small degree of any quality (amount or force or temperature etc.)
a feeling of low spirits
a position of inferior status; low in station or rank or fortune or estimation