defence vs defender

defence

noun
  • The portion of a team dedicated to preventing the other team from scoring; contrasted with offence. 

  • A strategy and tactics employed to prevent the other team from scoring; contrasted with offence. 

  • Government policy or (infra)structure related to the military. 

  • Something used to oppose attacks. 

  • The action of defending, of protecting from attack, danger or injury. 

  • An argument in support or justification of something. 

defender

noun
  • One of the players whose primary task is to prevent the opposition from scoring. 

  • A defendant in a civil action. 

  • A fighter who seeks to repel an attack. 

  • Someone who defends people or property. 

  • A lawyer who represents defendants, especially a public defender; a defense attorney (US) or defence counsel (UK). 

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