torment vs torture

torment

noun
  • Any extreme pain, anguish or misery, either physical or mental. 

  • Torture, originally as inflicted by an instrument of torture. 

verb
  • To cause severe suffering to (stronger than to vex but weaker than to torture.) 

torture

noun
  • The intentional causing of somebody's experiencing agony. 

  • The "suffering of the heart" imposed by one on another, as in personal relationships. 

  • (often as "absolute torture") Stage fright; severe embarrassment. 

verb
  • To intentionally inflict severe pain or suffering on (someone). 

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