efferent neuron vs neuron

efferent neuron and neuron both are nouns.

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

As nouns, neuron is a hypernym of efferent neuron; that is, neuron is a word with a broader meaning than efferent neuron:

efferent neuron: a neuron conducting impulses outwards from the brain or spinal cord
neuron: a cell that is specialized to conduct nerve impulses

Other hypernyms of efferent neuron include nerve cell.

efferent neuron (noun)	neuron (noun)
a neuron conducting impulses outwards from the brain or spinal cord	a cell that is specialized to conduct nerve impulses