malodor vs American spelling

malodor and American spelling both are nouns.

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

malodor (noun)	American spelling (noun)
a distinctive odor that is offensively unpleasant	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')