One word for a phrase

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Across
  1. 4. — A person who takes care of teeth
  2. 6. A person who teaches
  3. 9. — A person who studies science and does experiments
  4. 10. — A place where books are kept
Down
  1. 1. — A person who flies an aeroplane
  2. 2. — A person who cooks food professionally
  3. 3. — A person who writes books
  4. 5. — A person who plays music
  5. 7. — A person who paints pictures
  6. 8. — A person who drives a vehicle