radiatio optica vs pathway

radiatio optica and pathway both are nouns.

Word	Noun	Adjective	Verb	Adverb
radiatio optica	Yes	No	No	No
pathway	Yes	No	No	No

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

radiatio optica: a nerve pathway from the lateral geniculate body to the visual cortex
pathway: a bundle of myelinated nerve fibers following a path through the brain

Other hypernyms of radiatio optica include nerve pathway, nerve tract, tract.

radiatio optica (noun)	pathway (noun)
a nerve pathway from the lateral geniculate body to the visual cortex	a trodden path
	a bundle of myelinated nerve fibers following a path through the brain