smell vs perfume

smell and perfume both are nouns.

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

As nouns, perfume is a hyponym of smell; that is, perfume is a word with a more specific, narrower meaning than smell:

smell: the sensation that results when olfactory receptors in the nose are stimulated by particular chemicals in gaseous form
perfume: a distinctive odor that is pleasant

Other hyponyms of smell include scent, aroma, fragrance, scent, fetor, foetor, malodor, malodour, mephitis, reek, stench, stink, acridity, stank.

smell (noun)	perfume (noun)
the act of perceiving the odor of something	a toiletry that emits and diffuses a fragrant odor
any property detected by the olfactory system	a distinctive odor that is pleasant
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

smell (verb)	perfume (verb)
become aware of not through the senses but instinctively	apply perfume to
emit an odor	fill or impregnate with an odor
inhale the odor of; perceive by the olfactory sense
smell bad
have an element suggestive (of something)