mechanization vs American spelling

mechanization and American spelling both are nouns.

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

mechanization (noun)	American spelling (noun)
the act of implementing the control of equipment with advanced technology; usually involving electronic hardware	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')
the condition of having a highly technical implementation