American spelling vs unlikable

American spelling is a noun but unlikable is not a noun.

Word	Noun	Adjective	Verb	Adverb
American spelling	Yes	No	No	No
unlikable	No	Yes	No	No

American spelling (noun)	unlikable (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')

American spelling (adjective)	unlikable (adjective)
	(of characters in literature or drama) tending to evoke antipathetic feelings
	difficult or impossible to like