proprioceptor vs nerve end

proprioceptor and nerve end both are nouns.

Word	Noun	Adjective	Verb	Adverb
proprioceptor	Yes	No	No	No
nerve end	Yes	No	No	No

As nouns, nerve end is a hypernym of proprioceptor; that is, nerve end is a word with a broader meaning than proprioceptor:

proprioceptor: special nerve endings in the muscles and tendons and other organs that respond to stimuli regarding the position and movement of the body
nerve end: the terminal structure of an axon that does not end at a synapse

Other hypernyms of proprioceptor include nerve ending.

proprioceptor (noun)	nerve end (noun)
special nerve endings in the muscles and tendons and other organs that respond to stimuli regarding the position and movement of the body	the terminal structure of an axon that does not end at a synapse