extraordinariness vs extraordinary

extraordinariness is a noun but extraordinary is not a noun.

Word	Noun	Adjective	Verb	Adverb
extraordinariness	Yes	No	No	No
extraordinary	No	Yes	No	No

extraordinariness (noun)	extraordinary (noun)
the quality of being extraordinary and not commonly encountered

extraordinariness (adjective)	extraordinary (adjective)
	beyond what is ordinary or usual; highly unusual or exceptional or remarkable; special
	far more than usual or expected
	(of an official) serving an unusual or special function in addition to those of the regular officials