Who Am I?

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Across
  1. 2. works in the area of finance
  2. 3. officer, catch robbers
  3. 4. delivery mail to houses
  4. 8. right hand of a boss
  5. 10. makes furniture
  6. 11. head in the court
  7. 12. discoveries in specific area in science
Down
  1. 1. taking care of our teeth
  2. 5. plays an instrument
  3. 6. works with meat
  4. 7. designs the constructions of building
  5. 9. helps sick animal
  6. 13. fights in wars and protect people