blah vs ornateness

blah and ornateness both are nouns.

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

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

Other hypernyms of blah include grandiloquence, grandiosity, magniloquence, rhetoric.

blah (noun)	ornateness (noun)
pompous or pretentious talk or writing	an ornate appearance; being elaborately (even excessively) decorated
	high-flown style; excessive use of verbal ornamentation