stigmatization vs American spelling

stigmatization and American spelling both are nouns.

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

stigmatization (noun)	American spelling (noun)
the act of stigmatizing	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')