glumness vs desolation

glumness and desolation both are nouns.

Word	Noun	Adjective	Verb	Adverb
glumness	Yes	No	No	No
desolation	Yes	No	No	No

As nouns, desolation is a hyponym of glumness; that is, desolation is a word with a more specific, narrower meaning than glumness:

Other hyponyms of glumness include cloud, bareness, bleakness, nakedness.

glumness (noun)	desolation (noun)
a gloomy ill-tempered feeling	an event that results in total destruction
an atmosphere of depression and melancholy	sadness resulting from being forsaken or abandoned
	the state of being decayed or destroyed
	a bleak and desolate atmosphere