peaceful vs sleepless

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. 

sleepless

adj
  • Characterized by an absence of sleep. 

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