relativization vs American spelling

relativization and American spelling both are nouns.

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

relativization (noun)	American spelling (noun)
the act or result of making relative or regarding as relative rather than absolute.	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')