Let's celebrate

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Across
  1. 5. a device with an explosive that burns
  2. 6. talk in a loud voice
  3. 8. of extreme importance
  4. 9. a large wild member of the cat family
  5. 10. as of holidays or rites
Down
  1. 1. the sound of knocking a door
  2. 2. a parent of your father or mother
  3. 3. the subject matter at issue
  4. 4. celebrated on the 25th of December
  5. 7. specific to a person or thing or category