authority vs executive

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. 

executive

noun
  • A chief officer or administrator, especially one who can make significant decisions on their own authority. 

  • A process that coordinates and governs the action of other processes or threads; supervisor. 

  • The branch of government that is responsible for enforcing laws and judicial decisions, and for the day-to-day administration of the state. 

adj
  • Of, pertaining to, or having responsibility for the day-to-day running of an organisation, business, country, etc. 

  • Designed or fitted for execution, or carrying into effect. 

  • Exclusive. 

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