mediation vs peacemaking

mediation

noun
  • Negotiation to resolve differences conducted by an impartial party. 

  • The act of intervening for the purpose of bringing about a settlement. 

  • heritage interpretation 

peacemaking

noun
  • The act of reconciling two people or groups who disagree. 

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