Puzzle #27

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Across
  1. 2. A quantity or volume.
  2. 5. An electric charge.
  3. 6. A written or printed communication or commitment.
  4. 7. Someone who visits someone else; someone staying as a guest.
  5. 9. A symbol in an alphabet.
Down
  1. 1. The act or process by which something is built; construction.
  2. 3. At any time.
  3. 4. Influence or authority over something.
  4. 8. The primary source; origin.