unnaturally vs unnatural

unnaturally is not an adjective while unnatural is an adjective.

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

unnaturally (adjective)	unnatural (adjective)
	not in accordance with or determined by nature; contrary to nature
	not normal; not typical or usual or regular or conforming to a norm
	speaking or behaving in an artificial way to make an impression

unnaturally (adverb)	unnatural (adverb)
not according to nature; not by natural means
in an unnatural way
in a manner at variance with what is natural or normal