conviction vs viewpoint

conviction

noun
  • A firmly held belief. 

  • A judgement of guilt in a court of law. 

  • The state of being wholly convinced. 

  • The state of being found or proved guilty. 

viewpoint

noun
  • The position from which something is observed or considered 

  • An angle, outlook or point of view. 

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