urbanization vs American spelling

urbanization and American spelling both are nouns.

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

urbanization (noun)	American spelling (noun)
the social process whereby cities grow and societies become more urban	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')
the condition of being urbanized