efferent vs nervus

efferent and nervus both are nouns.

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

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

efferent: a nerve that conveys impulses toward or to muscles or glands
nervus: any bundle of nerve fibers running to various organs and tissues of the body

Other hypernyms of efferent include nerve.

efferent (noun)	nervus (noun)
a nerve that conveys impulses toward or to muscles or glands	any bundle of nerve fibers running to various organs and tissues of the body

efferent (adjective)	nervus (adjective)
of nerves and nerve impulses; conveying information away from the CNS