peduncle vs nerve pathway

peduncle and nerve pathway both are nouns.

Word	Noun	Adjective	Verb	Adverb
peduncle	Yes	No	No	No
nerve pathway	Yes	No	No	No

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

peduncle: a bundle of myelinated neurons joining different parts of the brain
nerve pathway: a bundle of myelinated nerve fibers following a path through the brain

Other hypernyms of peduncle include nerve tract, pathway, tract.

peduncle (noun)	nerve pathway (noun)
a bundle of myelinated neurons joining different parts of the brain	a bundle of myelinated nerve fibers following a path through the brain
stalk bearing an inflorescence or solitary flower
the thin process of tissue that attaches a polyp to the body