American spelling vs plagiarize

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

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

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

American spelling (verb)	plagiarize (verb)
	take without referencing from someone else's writing or speech; of intellectual property