American spelling vs acetylize

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

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

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

American spelling (verb)	acetylize (verb)
	receive substitution of an acetyl group
	introduce an acetyl group into (a chemical compound)