peaceful vs stridulous

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. 

stridulous

adj
  • Relating to stridor. 

  • Emitting a particularly harsh or shrill sound. 

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