afferent fiber vs nerve fibre

afferent fiber and nerve fibre both are nouns.

Word	Noun	Adjective	Verb	Adverb
afferent fiber	Yes	No	No	No
nerve fibre	Yes	No	No	No

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

afferent fiber: a nerve fiber that carries impulses toward the central nervous system
nerve fibre: a threadlike extension of a nerve cell

Other hypernyms of afferent fiber include nerve fiber.

afferent fiber (noun)	nerve fibre (noun)
a nerve fiber that carries impulses toward the central nervous system	a threadlike extension of a nerve cell