American spelling vs appetizing

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

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

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

American spelling (adjective)	appetizing (adjective)
	appealing to or stimulating the appetite especially in appearance or aroma