examine vs sanction

examine

verb
  • to interrogate 

  • to determine the aptitude, skills or qualifications of someone by subjecting them to an examination 

  • to observe or inspect carefully or critically 

  • to check the health or condition of something or someone 

sanction

verb
  • To give official authorization or approval to; to countenance. 

  • To penalize (a state etc.) with sanctions. 

  • To ratify; to make valid. 

noun
  • An approval, by an authority, generally one that makes something valid. 

  • A penalty, punishment, or some coercive measure, intended to ensure compliance; especially one adopted by several nations, or by an international body. 

  • A law, treaty, or contract, or a clause within a law, treaty, or contract, specifying any of the above. 

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