sedateness vs earnestness

sedateness and earnestness both are nouns.

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

As nouns, earnestness is a hypernym of sedateness; that is, earnestness is a word with a broader meaning than sedateness:

Other hypernyms of sedateness include serious-mindedness, seriousness, sincerity.

sedateness (noun)	earnestness (noun)
a trait of dignified seriousness	the trait of being serious
	an earnest and sincere feeling