lexicalization vs American spelling

lexicalization and American spelling both are nouns.

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

lexicalization (noun)	American spelling (noun)
the process of making a word to express a concept	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')