American spelling vs economize

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

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

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

American spelling (verb)	economize (verb)
	use cautiously and frugally
	spend sparingly, avoid the waste of