American spelling vs memorization

American spelling and memorization both are nouns.

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

American spelling (noun)	memorization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	learning so as to be able to remember verbatim