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Across
  1. 3. - Natural solid material used for building and paving
  2. 8. - Strong alloy of iron and carbon used in structural applications
  3. 9. - Mixture of cement, sand, and water used in construction
  4. 10. - Transparent material used for windows and other building applications
  5. 12. - Wood used for structural purposes, such as beams and columns
Down
  1. 1. - Granular material used as a component in mortar and concrete
  2. 2. - Material used for coating walls and ceilings, typically made from gypsum or lime
  3. 4. - Thin, flat piece of ceramic or stone used to cover surfaces
  4. 5. - Rectangular block made from clay or concrete, used in building walls
  5. 6. - Binding agent used in the production of concrete
  6. 7. - Hard fibrous material from trees, widely used in construction
  7. 10. - Hard, durable rock often used for countertops and building facades
  8. 11. - Black, sticky substance used in road construction and roofing