#plaster  a mixture of lime or gypsum with sand and water; hardens into a smooth solid; used to cover walls and ceilings
  supertype:  #mixture  #covering_material
  subtype:  #finish_coat__finishing_coat__finishingcoat  the final coating of plaster applied to walls and ceilings; "we can't paint until they put on the finishing coat"
  subtype:  #grout  a thin mortar that can be poured and used to fill cracks in masonry or brickwork
  subtype:  #parget__pargeting__pargetting  plaster used to coat outer walls and line chimneys
  subtype:  #roughcast.plaster  a coarse plaster for the surface of external walls
  subtype:  #spackle__spackling_compound__spacklingcompound  powder (containing gypsum plaster and glue) that when mixed with water forms a plastic paste used to fill cracks and holes in plaster
  subtype:  #stucco  a plaster now made mostly from Portland cement and sand and lime; applied while soft to cover exterior walls or surfaces

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