Dry wall and Wallboard

Dry wall noun - A wide flat board used to cover walls or partitions; made from plaster or wood pulp or other materials and used primarily to form the interior walls of houses.

Wallboard is a synonym for dry wall. In some cases you can use "Wallboard" instead a noun phrase "Dry wall".

Wallboard noun - A wide flat board used to cover walls or partitions; made from plaster or wood pulp or other materials and used primarily to form the interior walls of houses.

Dry wall is a synonym for wallboard. You can use "Dry wall" instead a noun "Wallboard".