insomniac vs peaceful

insomniac

noun
  • One who suffers an inability or difficulty sleeping; a sufferer from insomnia. 

adj
  • Suffering from or pertaining to insomnia. 

peaceful

noun
  • a Muslim; especially a violent member of a radical Islamist group. 

adj
  • Motionless and calm. 

  • Inclined to peace. 

  • Not at war; not disturbed by strife or turmoil. 

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