desolation vs glumness

desolation and glumness both are nouns.

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

As nouns, glumness is a hypernym of desolation; that is, glumness is a word with a broader meaning than desolation:

Other hypernyms of desolation include gloom, gloominess.

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