authority vs prerogative

authority

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

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

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

  • 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. 

prerogative

noun
  • A right, or power that is exclusive to a monarch etc, especially such a power to make a decision or judgement. 

  • A right, especially when due to one's position or role. 

  • A hereditary or official right or privilege. 

  • A property, attribute or ability which gives one a superiority or advantage over others; an inherent advantage or privilege; a talent. 

adj
  • Characterized by lawless state actions, as in a prerogative state. 

  • Having a hereditary or official right or privilege. 

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