one word substitution

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Across
  1. 1. Mark: An invisible seal on an important document.
  2. 3. An almirah where clothes are kept.
  3. 4. An unexpected fortune or wealth.
  4. 9. To waver in opinion or resolution.
  5. 11. A period of revival of art and literature.
  6. 12. A woman whose husband is dead.
  7. 13. Puller: A person who is related to an intrigue.
  8. 14. A goods carriage in a train.
  9. 15. A person who is ready to do anything for sake of money.
  10. 16. The repetition of anything word for word.
  11. 17. Evening prayer in the church.
  12. 18. A kind of card game.
Down
  1. 1. A list of passengers and luggage.
  2. 2. A person who is opinion or resolution.
  3. 4. A clever and amusing saying.
  4. 5. A person who lives on vegetables.
  5. 6. A genius who knows several things.
  6. 7. A thing which remains undamaged by water.
  7. 8. A man whose wife is dead.
  8. 10. A secret word to call a person.
  9. 15. An experienced person.