afferent fiber vs afferent

afferent fiber and afferent both are nouns.

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

afferent fiber (noun)	afferent (noun)
a nerve fiber that carries impulses toward the central nervous system	a nerve that passes impulses from receptors toward or to the central nervous system

afferent fiber (adjective)	afferent (adjective)
	of nerves and nerve impulses; conveying sensory information from the sense organs to the CNS