peduncle vs pathway

peduncle and pathway both are nouns.

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

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

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

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

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