emphasize vs American spelling

emphasize is not a noun while American spelling is a noun.

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

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

emphasize (verb)	American spelling (verb)
to stress, single out as important
give extra weight to (a communication)