Across
- 3. Porous volcanic stone used in Roman construction
- 4. Sustainable material made from plant stalks, popular in eco homes
- 6. Man-made stone substitute used for flooring and counters
- 9. Thin decorative stone or tile layer used for cladding
- 13. Material made from iron, carbon, and alloys
- 14. Recycled plastic and glass material used in green design
Down
- 1. Lightweight, rust-resistant metal used in modern structures
- 2. Reinforcing rods placed inside concrete
- 5. Baked clay block used in masonry
- 7. Compressed soil or clay blocks used in earthen architecture
- 8. The most common building material, made from cement, sand, and gravel
- 9. Flexible synthetic flooring material used in interiors
- 10. Natural stone used in historical architecture like the Taj Mahal
- 11. Transparent material used for windows and façades
- 12. Strong natural material derived from trees