ONLY 11

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Across
  1. 2. connector of land
  2. 5. being free
  3. 7. clap
  4. 8. draw attention
  5. 9. dawn or dusk
  6. 10. high landform
  7. 11. need food
  8. 13. what's ...1 and 10
  9. 16. a crystal of snow
  10. 17. feels slippery
  11. 18. makes one worried
Down
  1. 1. to tell something
  2. 2. stealer
  3. 3. washing stuff
  4. 4. quick look
  5. 6. change
  6. 9. process of thinking
  7. 12. invisible force
  8. 14. sun behind moon
  9. 15. not telling others