sedateness vs solemnity

sedateness and solemnity both are nouns.

Word	Noun	Adjective	Verb	Adverb
sedateness	Yes	No	No	No
solemnity	Yes	No	No	No

As nouns, sedateness and solemnity are synonyms defined as:

Other synonyms of sedateness include solemness, staidness.

sedateness (noun)	solemnity (noun)
a trait of dignified seriousness	a trait of dignified seriousness
	a solemn and dignified feeling