circularize vs American spelling

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

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

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

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