stench vs foetor

stench and foetor both are nouns.

Word	Noun	Adjective	Verb	Adverb
stench	Yes	No	No	No
foetor	Yes	No	No	No

As nouns, stench and foetor are synonyms defined as:

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

stench (noun)	foetor (noun)
a distinctive odor that is offensively unpleasant	a distinctive odor that is offensively unpleasant