American spelling vs initialize

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

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

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

American spelling (verb)	initialize (verb)
	divide (a disk) into marked sectors so that it may store data
	assign an initial value to a computer program