American spelling vs pasteurize

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

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

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

American spelling (verb)	pasteurize (verb)
	heat food in order to kill harmful microorganisms