bailie vs burgomaster

bailie

noun
  • The chief magistrate of a Scottish barony or part of a county, with functions like a sheriff's. 

  • A bailiff. 

  • A municipal officer in Scotland corresponding to an English alderman. 

burgomaster

noun
  • The mayor, or head magistrate, of a town in the Netherlands, Belgium, Germany and certain other countries. 

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