Harry Potter and the prisoner of Azkaban

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Across
  1. 3. the cross between a horse and an eagle
  2. 5. harry potters best friend who loves books
  3. 6. harry potters best friend who has 6 siblings
  4. 7. something they use to fly
  5. 8. expecto...?
  6. 11. team/house of evil/sly wizards/withes
  7. 12. the ancient word for bumblebee
  8. 15. home of books
  9. 16. a symbol with magical significants
  10. 17. school of witch craft and wizardry
  11. 20. teacher of charms
Down
  1. 1. team/house of naughty/brave wizards/witches
  2. 2. team/house of kind/loyal wizards/witches
  3. 4. A form of divination based on assigning numerical value
  4. 9. a person who raids
  5. 10. means theft of death
  6. 13. team/house of smart/wise wizards/withes
  7. 14. a cruel Athenian lawmaker
  8. 18. h0me of magical criminals
  9. 19. master of potions