conviction vs supposition

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. 

supposition

noun
  • The act or an instance of supposing. 

  • Something that is supposed; an assumption made to account for known facts, conjecture. 

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