Card board

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Across
  1. 3. something that is formed by combining two or more things
  2. 4. any of a race of giants in Greek mythology with a single eye in the middle of the forehead
  3. 6. an administrative officer in charge of a business, government, or school unit or operation
  4. 7. incapable of being explained, interpreted, or accounted for
  5. 9. causing astonishment or wonder
Down
  1. 1. to set or close tightly
  2. 2. to flow in a broken irregular current
  3. 4. made of corrugated material (such as cardboard)
  4. 5. a citizen of Baghdad whose adventures at sea are told in the Arabian Nights' Entertainments
  5. 8. the process or system by which goods and services are produced, sold, and bought in a country or region