immunize vs American spelling

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

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

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

immunize (verb)	American spelling (verb)
perform vaccinations or produce immunity in by inoculation
grant immunity from prosecution