Collective noun

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Across
  1. 2. _____________ of fishes
  2. 4. _____________ of singers
  3. 6. _____________ of writing material
  4. 8. _____________ of owls
  5. 10. _____________ of listeners
  6. 12. _____________ of angry people
  7. 15. _____________ of Trees
  8. 16. _____________ of wolves
  9. 17. _____________ of whales
Down
  1. 1. _____________ of penguins
  2. 3. _____________ of Dancers
  3. 5. _____________ of Rabbits
  4. 7. _____________ of Teachers
  5. 9. _____________ of ants
  6. 11. _____________ of drawers
  7. 13. _____________ of birds
  8. 14. _____________ of Elephants
  9. 16. _____________ of lions