stuffiness vs soberness

stuffiness and soberness both are nouns.

Word	Noun	Adjective	Verb	Adverb
stuffiness	Yes	No	No	No
soberness	Yes	No	No	No

As nouns, soberness is a hypernym of stuffiness; that is, soberness is a word with a broader meaning than stuffiness:

Other hypernyms of stuffiness include graveness, gravity, sobriety, somberness, sombreness.

stuffiness (noun)	soberness (noun)
dull and pompous gravity	a manner that is serious and solemn
the quality of being close and poorly ventilated	the state of being sober and not intoxicated by alcohol
state of obstruction or stoppage or air in the nose or throat