Various english words

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Across
  1. 4. The finale of a play or film
  2. 7. A large wave
  3. 8. The upper part of a building
  4. 11. A rapid leak/break out
  5. 13. Loudest volcano in history
  6. 15. A mass of condensed vapor
  7. 16. Uncontrolled forest fire
  8. 18. Favorite food of pandas
  9. 19. The thing that a volcano emits
Down
  1. 1. A common tree in Lithuania
  2. 2. The falling of snow down a steep slope
  3. 3. Lying underwater
  4. 5. Everyone's most hated school subject
  5. 6. A bulge on the Earth's surface
  6. 7. Rapidly rotating column of air
  7. 9. Land next to a river
  8. 10. Rapidly rising water
  9. 12. Unofficial religion of Lithuania
  10. 14. Country with largest recorded earthquake
  11. 17. Lack of water in a region