A rigid, insulating building board made of a core of gypsum plaster set between and bonded to outer coverings of heavy cardboard It is made in many types and several thickness' and used for flat and even walls and ceilings
A base material that provides a fire-resistant underlayment for trowel-applied plaster and has an absorbent face paper meant to draw water away from the freshly applied plaster to keep it from slumping
Plasterboard is cardboard covered with plaster which is used for covering walls and ceilings instead of using plaster. board made of large sheets of thick paper held together with plaster, used to cover walls and ceilings inside a house American Equivalent: drywall