WALNUT

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Across
  1. 3. Excellent machinability, works well with hand tools
  2. 4. Straight grained, with waves and burls
  3. 5. Creamy white sapwood, light-dark brown heartwood
  4. 7. Hardwood
Down
  1. 1. North America, Europe, Middle East
  2. 2. Resistant to rot, and hypoallergenic
  3. 6. Furniture, cabinetry, flooring, and architectural elements like paneling