authority vs syndic

authority

noun
  • Persons, regarded collectively, who occupy official positions of power; police or law enforcement. 

  • A reliable, definitive source of information on a subject. 

  • Official permission; authorisation to act in some capacity on behalf of a ruling entity. 

  • A government-owned agency that runs a revenue-generating activity for public benefit. 

  • Status as a trustworthy source of information, reputation for mastery or expertise; or claim to such status or reputation. 

  • Power or right to make or enforce rules or give orders; or a position having such power or right. 

syndic

noun
  • A government official having different duties depending on the country; also, a magistrate, especially one of the Chief Magistrates of Geneva, Switzerland. 

  • An agent of a corporation, or of any body of people engaged in a business enterprise; specifically, in the University of Cambridge, a member of the senate appointed to carry out specific duties. 

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