low-toned vs peaceful

low-toned

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 low-toned and peaceful occurred in a corpus of books? (source: Google Ngram Viewer )