fibreboard vs particle board

fibreboard and particle board both are nouns.

Word	Noun	Adjective	Verb	Adverb
fibreboard	Yes	No	No	No
particle board	Yes	No	No	No

As nouns, fibreboard and particle board are synonyms defined as:

fibreboard and particle board: wallboard composed of wood chips or shavings bonded together with resin and compressed into rigid sheets

Other synonyms of fibreboard include fiberboard.

fibreboard (noun)	particle board (noun)
wallboard composed of wood chips or shavings bonded together with resin and compressed into rigid sheets	wallboard composed of wood chips or shavings bonded together with resin and compressed into rigid sheets