afferent nerve vs nervus

afferent nerve and nervus both are nouns.

Word	Noun	Adjective	Verb	Adverb
afferent nerve	Yes	No	No	No
nervus	Yes	No	No	No

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

afferent nerve: a nerve that passes impulses from receptors toward or to the central nervous system
nervus: any bundle of nerve fibers running to various organs and tissues of the body

Other hypernyms of afferent nerve include nerve.

afferent nerve (noun)	nervus (noun)
a nerve that passes impulses from receptors toward or to the central nervous system	any bundle of nerve fibers running to various organs and tissues of the body