chipboard vs hardboard

chipboard and hardboard both are nouns.

Word	Noun	Adjective	Verb	Adverb
chipboard	Yes	No	No	No
hardboard	Yes	No	No	No

As nouns, chipboard and hardboard are synonyms defined as:

chipboard and hardboard: a cheap hard material made from wood chips that are pressed together and bound with synthetic resin

chipboard (noun)	hardboard (noun)
a cheap hard material made from wood chips that are pressed together and bound with synthetic resin	a cheap hard material made from wood chips that are pressed together and bound with synthetic resin