groaning vs tormentor

groaning

noun
  • A low sound associated with extended suffering, sorrow, and toil. 

adj
  • Heavily laden, as if to creak under the strain. 

  • That groans. 

tormentor

noun
  • Something abstract that causes suffering. 

  • An implement for reducing a stiff soil, resembling a harrow, but running upon wheels. 

  • One who torments; a person, animal, or object that causes suffering. 

  • One of a pair of narrow curtains just behind the front curtain and teaser that mask the areas on the sides of the stage and can be adjusted to the desired width. 

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