lemniscus vs afferent nerve

lemniscus and afferent nerve both are nouns.

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

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

lemniscus: a bundle of sensory nerve fibers going to the thalamus
afferent nerve: a nerve that passes impulses from receptors toward or to the central nervous system

Other hypernyms of lemniscus include afferent, sensory nerve.

lemniscus (noun)	afferent nerve (noun)
a bundle of sensory nerve fibers going to the thalamus	a nerve that passes impulses from receptors toward or to the central nervous system