unnatural vs natural

unnatural is not a noun while natural is a noun.

Word	Noun	Adjective	Verb	Adverb
unnatural	No	Yes	No	No
natural	Yes	Yes	No	No

unnatural (noun)	natural (noun)
	(craps) a first roll of 7 or 11 that immediately wins the stake
	a notation cancelling a previous sharp or flat
	someone regarded as certain to succeed

unnatural (adjective)	natural (adjective)
not in accordance with or determined by nature; contrary to nature	(of a parent or child) related by blood; genetically related
not normal; not typical or usual or regular or conforming to a norm	in accordance with nature; relating to or concerning nature
speaking or behaving in an artificial way to make an impression	existing in or produced by nature; not artificial or imitation
	existing in or in conformity with nature or the observable world; neither supernatural nor magical
	(of a musical note) being neither raised nor lowered by one chromatic semitone
	being talented through inherited qualities
	functioning or occurring in a normal way; lacking abnormalities or deficiencies
	unthinking; prompted by (or as if by) instinct
	free from artificiality
	(used especially of commodities) being unprocessed or manufactured using only simple or minimal processes