American spelling vs feminize

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

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

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

American spelling (verb)	feminize (verb)
	to give a (more) feminine, effeminate, or womanly quality or appearance to
	assume (more) feminine characteristics