exteriorization vs American spelling

exteriorization and American spelling both are nouns.

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

exteriorization (noun)	American spelling (noun)
embodying in an outward form	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')