American spelling vs digitalization

American spelling and digitalization both are nouns.

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

American spelling (noun)	digitalization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	the administration of digitalis for the treatment of certain heart disorders