propitiation vs requital

propitiation

noun
  • The act of propitiating; placation, atonement, similar to expiation but with the added concept of appeasement of anger. 

  • The death of Christ as a basis for the forgiveness of sin. 

requital

noun
  • Retaliation or reprisal; vengeance. 

  • Compensation for loss or damage; amends. 

  • Repayment, reward, recompense, return in kind. 

How often have the words propitiation and requital occurred in a corpus of books? (source: Google Ngram Viewer )