American spelling vs motorize

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

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

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

American spelling (verb)	motorize (verb)
	equip with armed and armored motor vehicles
	equip with a motor
	equip with a motor vehicle