authority vs sway

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. 

sway

noun
  • Rule; dominion; control; power. 

  • The act of swaying; a swaying motion; a swing or sweep of a weapon. 

  • Preponderance; turn or cast of balance. 

  • A switch or rod used by thatchers to bind their work. 

  • The maximum amplitude of a vehicle's lateral motion. 

  • A rocking or swinging motion. 

  • Influence, weight, or authority that inclines to one side 

verb
  • To influence or direct by power, authority, persuasion, or by moral force; to rule; to govern; to guide. Compare persuade. 

  • To move or wield with the hand; to swing; to wield. 

  • To bear sway; to rule; to govern. 

  • To hoist (a mast or yard) into position. 

  • To be drawn to one side by weight or influence; to lean; to incline. 

  • To have weight or influence. 

  • To cause to incline or swing to one side, or backward and forward; to bias; to turn; to bend; warp. 

  • To move or swing from side to side; or backward and forward; to rock. 

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