American spelling vs dehumanize

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

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

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

American spelling (verb)	dehumanize (verb)
	make mechanical or routine
	deprive of human qualities