American spelling vs pasteurization

American spelling and pasteurization both are nouns.

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

American spelling (noun)	pasteurization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	partial sterilization of foods at a temperature that destroys harmful microorganisms without major changes in the chemistry of the food