divan vs kangaroo court

divan

noun
  • The council chamber where this court is held; (by extension), any court of justice. 

  • A couch- or sofa-like piece of furniture made of a mattress lying against the wall and either on the floor or an elevated structure. 

  • A Muslim council of state, specifically that of viziers of the Ottoman Empire that discussed and recommended new laws and law changes to a higher authority (the sultan). 

  • A collection of poems, especially one written by an author in Arabic or Persian. 

kangaroo court

noun
  • A judicial or quasi-judicial proceeding, or a group of people which conducts such proceedings, which is without proper authority, and often acts abusively or decides unjustly. 

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