groaning vs sobbing

groaning

adj
  • That groans. 

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

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

sobbing

adj
  • That or who sobs. 

noun
  • Act of one who sobs; a crying or weeping. 

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