stink vs olfactory sensation

stink and olfactory sensation both are nouns.

Word	Noun	Adjective	Verb	Adverb
stink	Yes	No	Yes	No
olfactory sensation	Yes	No	No	No

As nouns, olfactory sensation is a hypernym of stink; that is, olfactory sensation is a word with a broader meaning than stink:

stink: a distinctive odor that is offensively unpleasant
olfactory sensation: the sensation that results when olfactory receptors in the nose are stimulated by particular chemicals in gaseous form

Other hypernyms of stink include odor, odour, olfactory perception, smell.

stink (noun)	olfactory sensation (noun)
a distinctive odor that is offensively unpleasant	the sensation that results when olfactory receptors in the nose are stimulated by particular chemicals in gaseous form

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