memorization vs American spelling

memorization and American spelling both are nouns.

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

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