fibreoptics vs fiber optics

fibreoptics and fiber optics both are nouns.

Word	Noun	Adjective	Verb	Adverb
fibreoptics	Yes	No	No	No
fiber optics	Yes	No	No	No

As nouns, fibreoptics and fiber optics are synonyms defined as:

fibreoptics and fiber optics: the transmission of light signals via glass fibers

Other synonyms of fibreoptics include fiberoptics, fibre optics.

fibreoptics (noun)	fiber optics (noun)
the transmission of light signals via glass fibers	the transmission of light signals via glass fibers