credulity vs good faith

credulity

noun
  • A willingness to believe in someone or something in the absence of reasonable proof; credulousness. 

  • Faith, credence; acceptance or maintenance of a belief. 

good faith

noun
  • Good, honest intentions, even if producing unfortunate results. 

adj
  • Having or done with good, honest intentions; well-intentioned. 

  • Presuming that all parties to a discussion are honest and intend to act in a fair and appropriate manner. 

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