American spelling vs prologize

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

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

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

American spelling (verb)	prologize (verb)
	write or speak a prologue