credo vs immorality

credo

noun
  • A statement of a belief or a summary statement of a whole belief system; also (metonymically) the belief or belief system itself. 

  • The liturgical creed (usually the Nicene Creed), or a musical arrangement of it for use in church services. 

immorality

noun
  • An immoral act or practice. 

  • The state or quality of being immoral; vice. 

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