mateship vs rapprochement

mateship

noun
  • Friendship, particularly between men, such as develops in shared adversity; solidarity. 

  • Fellowship; companionship. 

  • A relationship based on mating. 

  • The post of mate on a ship; a posting as mate. 

rapprochement

noun
  • The reestablishment of cordial relations, particularly between two countries; a reconciliation. 

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