American spelling vs realize

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

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

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

American spelling (verb)	realize (verb)
	perceive (an idea or situation) mentally
	be fully aware or cognizant of
	make real or concrete; give reality or substance to
	expand or complete (a part in a piece of baroque music) by supplying the harmonies indicated in the figured bass
	convert into cash; of goods and property
	earn on some commercial or business transaction; earn as salary or wages