Wallboard
Part of speech: noun
Definition: a construction material of pre-made boards used for walls and ceilings, usually a gypsum-core with a paper surface.
Drywall
Part of speech: verb
Definition: To install and finish drywall.
Part of speech: noun
Definition: A building material comprising a sheet of gypsum sandwiched between two pieces of heavy paper, used mainly for interior walls and ceilings.A wall made of this.A stone wall constructed without mortar or cement.