The Word Within The Word

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Across
  1. 4. To handle or control
  2. 5. Clear enough to read
  3. 6. A plane figure with four straight sides and four right angles
  4. 9. The offspring of a god and a mortal
Down
  1. 1. The body of words used in a particular language
  2. 2. Adapted for or using both eyes
  3. 3. To inflict severe pain on
  4. 4. A reflective surface
  5. 7. A small rocky body orbiting the sun
  6. 8. To strengthen or invigorate