enlighten vs unhinge

enlighten

verb
  • To make something clear to (someone); to give knowledge or understanding to. 

  • To supply with light. 

unhinge

verb
  • To remove the leaf of a door or a window from its supporting hinges. 

  • To dislocate. 

  • To mentally disturb. 

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