tradition vs unbelief

tradition

noun
  • The act of delivering into the hands of another; delivery. 

  • An established or distinctive style or method 

  • A part of culture that is passed from person to person or generation to generation, possibly differing in detail from family to family, such as the way to celebrate holidays. 

  • A commonly held system. 

unbelief

noun
  • An absence (or rejection) of belief, especially religious belief 

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