optical fibre vs glass fiber

optical fibre and glass fiber both are nouns.

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

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

optical fibre and glass fiber: 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 fibre, optical fiber.

optical fibre (noun)	glass fiber (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