fetor vs malodor

fetor and malodor both are nouns.

Word	Noun	Adjective	Verb	Adverb
fetor	Yes	No	No	No
malodor	Yes	No	No	No

As nouns, fetor and malodor are synonyms defined as:

Other synonyms of fetor include foetor, malodour, mephitis, reek, stench, stink.

fetor (noun)	malodor (noun)
a distinctive odor that is offensively unpleasant	a distinctive odor that is offensively unpleasant