American spelling vs lexicalization

American spelling and lexicalization both are nouns.

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

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