gloominess vs apprehensiveness

gloominess and apprehensiveness both are nouns.

Word	Noun	Adjective	Verb	Adverb
gloominess	Yes	No	No	No
apprehensiveness	Yes	No	No	No

As nouns, apprehensiveness is a hypernym of gloominess; that is, apprehensiveness is a word with a broader meaning than gloominess:

Other hypernyms of gloominess include apprehension, dread, melancholy.

gloominess (noun)	apprehensiveness (noun)
the quality of excessive mournfulness and uncheerfulness	fearful expectation or anticipation
The property of having a frowning or scowling appearance.
a feeling of melancholy apprehension
an atmosphere of depression and melancholy