stink vs smell

stink and smell both are nouns.

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

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

stink: a distinctive odor that is offensively unpleasant
smell: 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, olfactory sensation.

As verbs, smell is a hypernym of stink; that is, smell is a word with a broader meaning than stink:

stink (noun)	smell (noun)
a distinctive odor that is offensively unpleasant	the act of perceiving the odor of something
	any property detected by the olfactory system
	the faculty that enables us to distinguish scents
	the sensation that results when olfactory receptors in the nose are stimulated by particular chemicals in gaseous form
	the general atmosphere of a place or situation and the effect that it has on people

stink (verb)	smell (verb)
smell badly and offensively	become aware of not through the senses but instinctively
be extremely bad in quality or in one's performance	emit an odor
	inhale the odor of; perceive by the olfactory sense
	smell bad
	have an element suggestive (of something)