fasciculus vs fibre bundle

fasciculus and fibre bundle both are nouns.

Word	Noun	Adjective	Verb	Adverb
fasciculus	Yes	No	No	No
fibre bundle	Yes	No	No	No

As nouns, fasciculus and fibre bundle are synonyms defined as:

fasciculus and fibre bundle: a bundle of fibers (especially nerve fibers)

Other synonyms of fasciculus include fascicle, fiber bundle.

fasciculus (noun)	fibre bundle (noun)
a bundle of fibers (especially nerve fibers)	a bundle of fibers (especially nerve fibers)