American spelling vs circularize

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

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

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

American spelling (verb)	circularize (verb)
	make circular
	cause to become widely known
	distribute circulars to
	canvass by distributing letters
	canvass by using a questionnaire