fibre bundle vs fascicle

fibre bundle and fascicle both are nouns.

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

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

Other synonyms of fibre bundle include fasciculus, fiber bundle.

fibre bundle (noun)	fascicle (noun)
a bundle of fibers (especially nerve fibers)	a bundle of fibers (especially nerve fibers)
	an installment of a printed work