sensing vs smell

sensing and smell both are nouns.

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

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

Other hyponyms of sensing include look, looking, looking at, hearing, listening, lipreading, taste, tasting, smelling.

sensing (noun)	smell (noun)
becoming aware of something via the senses	the act of perceiving the odor of something
the perception that something has occurred or some state exists	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

sensing (verb)	smell (verb)
	become aware of not through the senses but instinctively
	emit an odor
	inhale the odor of; perceive by the olfactory sense
	smell bad
	have an element suggestive (of something)