graveness vs stuffiness

graveness and stuffiness both are nouns.

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

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

Other hyponyms of graveness include stodginess.

graveness (noun)	stuffiness (noun)
a manner that is serious and solemn	dull and pompous gravity
	the quality of being close and poorly ventilated
	state of obstruction or stoppage or air in the nose or throat