stuffiness vs sobriety

stuffiness and sobriety both are nouns.

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

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

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

stuffiness (noun)	sobriety (noun)
dull and pompous gravity	abstaining from excess
the quality of being close and poorly ventilated	a manner that is serious and solemn
state of obstruction or stoppage or air in the nose or throat	moderation in or abstinence from alcohol or other drugs
	the state of being sober and not intoxicated by alcohol