foolishness vs ignorance

foolishness

noun
  • The state of being foolish. 

  • A thing or event that is foolish, or an absurdity. 

ignorance

noun
  • Sins committed through ignorance. 

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

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