optical fibre vs glass fibre

optical fibre and glass fibre both are nouns.

Word	Noun	Adjective	Verb	Adverb
optical fibre	Yes	No	No	No
glass fibre	Yes	No	No	No

As nouns, optical fibre and glass fibre are synonyms defined as:

optical fibre and glass fibre: a very thin fiber made of glass that functions as a waveguide for light; used in bundles to transmit images

Other synonyms of optical fibre include glass fiber, optical fiber.

optical fibre (noun)	glass fibre (noun)
a very thin fiber made of glass that functions as a waveguide for light; used in bundles to transmit images	a very thin fiber made of glass that functions as a waveguide for light; used in bundles to transmit images