act as middle vs make peace

act as middle

make peace

verb
  • To settle a dispute or disagreement. 

  • To end hostilities; to reach a peace agreement. 

  • To initiate or resume a cordial relationship after a period of animosity. 

  • To accept something, especially if it is considered unfavourable. 

How often have the words act as middle and make peace occurred in a corpus of books? (source: Google Ngram Viewer )