just words unit 7

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Across
  1. 3. A large sea mammal (5 letters)
  2. 6. A loud noise made by a car horn (4 letters)
  3. 8. A brass instrument with a slide (7 letters)
  4. 9. To save or economize carefully (6 letters)
  5. 10. An adjective describing something without bones (7
  6. 12. A source of rumors or long stem where a fruit grows(9 letters)
  7. 14. Hit lightly or bump into (4 letters)
  8. 16. An outdoor race involving animals charging together (8 letters)
  9. 17. The smell of something unpleasant (5 letters)
  10. 18. Word describing something unstable or crooked (5 letters)
Down
  1. 1. A tool for removing something stuck on something (7 letters)
  2. 2. A large piece or part of something (5 letters)
  3. 4. To breathe out (6 letters)
  4. 5. Another word for trash (4 letters)
  5. 7. Dense and strong, often used for buildings (8 letters)
  6. 11. Something that has gone underwater (4 letters)
  7. 13. A delay or deferral (11 letters)
  8. 15. A condition where something is expanding (8 letters)