American spelling vs factor analyze

American spelling is a noun but factor analyze is not a noun.

Word	Noun	Adjective	Verb	Adverb
American spelling	Yes	No	No	No
factor analyze	No	No	Yes	No

American spelling (noun)	factor analyze (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')

American spelling (verb)	factor analyze (verb)
	to perform a factor analysis of correlational data