American spelling vs factorization

American spelling and factorization both are nouns.

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

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