ear vs sensory receptor

ear and sensory receptor both are nouns.

Word	Noun	Adjective	Verb	Adverb
ear	Yes	No	No	No
sensory receptor	Yes	No	No	No

As nouns, sensory receptor is a hypernym of ear; that is, sensory receptor is a word with a broader meaning than ear:

ear: the sense organ for hearing and equilibrium
sensory receptor: an organ having nerve endings (in the skin or viscera or eye or ear or nose or mouth) that respond to stimulation

Other hypernyms of ear include receptor, sense organ.

ear (noun)	sensory receptor (noun)
the sense organ for hearing and equilibrium	an organ having nerve endings (in the skin or viscera or eye or ear or nose or mouth) that respond to stimulation
the externally visible cartilaginous structure of the external ear
good hearing
attention to what is said
fruiting spike of a cereal plant especially corn