wallboard

As a noun wallboard is

a construction material of pre-made boards used for walls and ceilings, usually a gypsum core with a paper surface.

As nouns the difference between fallboard and wallboard

is that fallboard is (music) the hinged cover which protects the keyboard of a piano when not in use while wallboard is a construction material of pre-made boards used for walls and ceilings, usually a gypsum core with a paper surface.

As nouns the difference between wallboard and drywall

is that wallboard is a construction material of pre-made boards used for walls and ceilings, usually a gypsum core with a paper surface while drywall is a building material comprising a sheet of gypsum sandwiched between two pieces of heavy paper, used mainly for interior walls and ceilings.

As a verb drywall is

to install and finish drywall.

As nouns the difference between taxonomy and wallboard

is that taxonomy is the science or the technique used to make a classification while wallboard is a construction material of pre-made boards used for walls and ceilings, usually a gypsum core with a paper surface.