Dry powder that hardens after mixing with water. It is an ingredient in concrete as well as mortar.

• Mortar is a homogeneous mixture of CEMENT + SAND + WATER.
  It is used in masonry work or for covering a wall.
  
  
• Concrete is a homogeneous mixture of CEMENT + GRAVEL + SAND + WATER + additives.
  Concrete is a construction material used to make garage and basement floors, foundation walls, etc.