carbonization vs American spelling

carbonization and American spelling both are nouns.

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

carbonization (noun)	American spelling (noun)
the destructive distillation of coal (as in coke ovens)	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')