stink vs odour

stink and odour both are nouns.

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

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

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

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

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

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