What do they do?

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Across
  1. 3. Guitar
  2. 8. Joseph
  3. 9. Elon Musk
  4. 10. hospital
  5. 11. Plants
  6. 13. Gun
  7. 15. bread
Down
  1. 1. creative
  2. 2. Games
  3. 4. goal
  4. 5. videos
  5. 6. Books
  6. 7. animals
  7. 12. Blackpink
  8. 14. Piano