ornateness vs fussiness

ornateness and fussiness both are nouns.

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

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

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

Other hyponyms of ornateness include flamboyance, floridity, floridness, showiness.

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