fussiness vs ornateness

fussiness and ornateness both are nouns.

Word	Noun	Adjective	Verb	Adverb
fussiness	Yes	No	No	No
ornateness	Yes	No	No	No

As nouns, ornateness is a hypernym of fussiness; that is, ornateness is a word with a broader meaning than fussiness:

fussiness: unnecessary elaborateness in details
ornateness: an ornate appearance; being elaborately (even excessively) decorated

Other hypernyms of fussiness include elaborateness.

fussiness (noun)	ornateness (noun)
unnecessary elaborateness in details	an ornate appearance; being elaborately (even excessively) decorated
an irritable petulant feeling	high-flown style; excessive use of verbal ornamentation