Etymology

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Across
  1. 2. from, down
  2. 4. two
  3. 7. within
  4. 9. measured from the Earth's center
  5. 11. membranous sac enclosing the heart
  6. 13. arousing pity
  7. 17. together with
  8. 18. expressed in a roundabout way
Down
  1. 1. poem on farming
  2. 3. rule by absolute sovereign
  3. 5. between
  4. 6. change of form
  5. 8. to
  6. 10. apart, away
  7. 12. total absence of rule of government
  8. 14. against
  9. 15. having no definite form
  10. 16. aversion, feeling against
  11. 19. before
  12. 20. around