atonement vs conciliation

atonement

noun
  • The reconciliation of God and mankind through the death of Jesus. 

  • Making amends to restore a damaged relationship; expiation. 

conciliation

noun
  • The process of bringing peace and harmony; the ending of strife. 

  • A form of alternative dispute resolution, similar to but less formal than mediation, in which the parties bring their dispute to a neutral third party, who helps lower tensions, improve communications and explore possible solutions. 

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