efferent neuron vs motoneuron

efferent neuron and motoneuron both are nouns.

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

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

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

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

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