extraordinary vs ordinary

extraordinary is not a noun while ordinary is a noun.

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

extraordinary (noun)	ordinary (noun)
	(heraldry) any of several conventional figures used on shields
	an early bicycle with a very large front wheel and small back wheel
	a clergyman appointed to prepare condemned prisoners for death
	a judge of a probate court
	the expected or commonplace condition or situation

extraordinary (adjective)	ordinary (adjective)
beyond what is ordinary or usual; highly unusual or exceptional or remarkable; special	not exceptional in any way especially in quality or ability or size or degree
far more than usual or expected	lacking special distinction, rank, or status; commonly encountered
(of an official) serving an unusual or special function in addition to those of the regular officials