alcalde vs kangaroo court

alcalde

noun
  • In Spain or Latin America, a municipal magistrate who has both judicial and administrative functions. 

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 alcalde and kangaroo court occurred in a corpus of books? (source: Google Ngram Viewer )