efferent neuron vs motor neuron

efferent neuron and motor neuron both are nouns.

Word	Noun	Adjective	Verb	Adverb
efferent neuron	Yes	No	No	No
motor neuron	Yes	No	No	No

As nouns, efferent neuron and motor neuron are synonyms defined as:

efferent neuron and motor neuron: a neuron conducting impulses outwards from the brain or spinal cord

Other synonyms of efferent neuron include motoneuron, motor nerve fiber.

efferent neuron (noun)	motor neuron (noun)
a neuron conducting impulses outwards from the brain or spinal cord	a neuron conducting impulses outwards from the brain or spinal cord