factorization vs American spelling

factorization and American spelling both are nouns.

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

factorization (noun)	American spelling (noun)
(mathematics) the resolution of an expression into factors such that when multiplied together they give the original expression	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')