mephitis vs stink

mephitis and stink both are nouns.

Word	Noun	Adjective	Verb	Adverb
mephitis	Yes	No	No	No
stink	Yes	No	Yes	No

As nouns, mephitis and stink are synonyms defined as:

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

mephitis (noun)	stink (noun)
a distinctive odor that is offensively unpleasant	a distinctive odor that is offensively unpleasant
a poisonous or foul smelling gas emitted from the earth

mephitis (verb)	stink (verb)
	smell badly and offensively
	be extremely bad in quality or in one's performance