fiber optics vs fibreoptics

fiber optics and fibreoptics both are nouns.

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

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

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

Other synonyms of fiber optics include fiberoptics, fibre optics.

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