ignorance vs simplicity

ignorance

noun
  • The condition of being uninformed or uneducated; lack of knowledge or information. 

  • Sins committed through ignorance. 

simplicity

noun
  • Lack of sharpness of mind; lack of ability to think using complex ideas; stupidity 

  • Lack of subtlety or abstruseness; clarity 

  • Lack of artificial ornament, pretentious style, or luxury; plainness 

  • Lack of complication; efficiency. 

  • The quality or state of being not complex, or of consisting of few parts 

  • The quality or state of being unmixed or uncompounded 

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