calm vs peaceful

calm

adj
  • Peaceful, quiet, especially free from anger and anxiety. 

  • with few or no waves on the surface; not rippled. 

  • Free of noise and disturbance. 

  • Without wind or storm. 

verb
  • To become calm. 

  • To make calm. 

noun
  • The state of being calm; peacefulness; absence of worry, anger, fear or other strong negative emotion. 

  • A period of time without wind. 

  • The state of being calm; absence of noise and disturbance. 

peaceful

adj
  • Motionless and calm. 

  • Inclined to peace. 

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

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

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