conviction vs opinion

conviction

noun
  • A judgement of guilt in a court of law. 

  • The state of being wholly convinced. 

  • A firmly held belief. 

  • The state of being found or proved guilty. 

opinion

noun
  • a judicial opinion delivered by an Advocate General to the European Court of Justice where he or she proposes a legal solution to the cases for which the court is responsible 

  • A belief, judgment or perspective that a person has formed, either through objective or subjective reasoning, about a topic, issue, person or thing. 

  • The formal decision, or expression of views, of a judge, an umpire, a doctor, or other party officially called upon to consider and decide upon a matter or point submitted. 

  • The judgment or sentiment which the mind forms of persons or things; estimation. 

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