appall vs American spelling

appall is not a noun while American spelling is a noun.

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

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

appall (verb)	American spelling (verb)
strike with disgust or revulsion
fill with apprehension or alarm; cause to be unpleasantly surprised