modernization vs American spelling

modernization and American spelling both are nouns.

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

modernization (noun)	American spelling (noun)
making modern in appearance or behavior	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')
a modernized version (as of a play)