American spelling vs agonize

American spelling is a noun but agonize is not a noun.

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

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

American spelling (verb)	agonize (verb)
	suffer agony or anguish
	cause to agonize