American spelling vs ionize

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

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

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

American spelling (verb)	ionize (verb)
	convert into ions
	become converted into ions