American spelling vs internalization

American spelling and internalization both are nouns.

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

American spelling (noun)	internalization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	learning (of values or attitudes etc.) that is incorporated within yourself