chief vs ethnarch

chief

noun
  • A leader or head of a group of people, organisation, etc. 

  • An informal term of address. 

  • The principal part or top of anything. 

  • An informal term of address for a Native American or First Nations man. 

  • The top part of a shield or escutcheon; more specifically, an ordinary consisting of the upper part of the field cut off by a horizontal line, generally occupying the top third. 

adj
  • Primary; principal. 

  • Intimate, friendly. 

verb
  • To smoke cannabis. 

ethnarch

noun
  • A leader of an ethnic community, especially a Jewish or (in the Ottoman Empire) Eastern Orthodox leader having political as well as spiritual authority. 

  • The governor of a Jewish province under the Roman Empire. 

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