subsidization vs American spelling

subsidization and American spelling both are nouns.

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

subsidization (noun)	American spelling (noun)
the act of providing a subsidy	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')
money (or other benefits) obtained as a subsidy