Nouns -ance / -ence

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Across
  1. 3. annoy
  2. 8. refer
  3. 10. guide
  4. 11. perform
  5. 12. dominate
  6. 13. interfere
  7. 15. differ
  8. 16. insist
  9. 19. admit
  10. 20. tolerate
Down
  1. 1. maintain
  2. 2. remember
  3. 4. exist
  4. 5. coincide
  5. 6. observe
  6. 7. pretend
  7. 9. depend
  8. 14. emerge
  9. 17. enter
  10. 18. defend