girn vs groaning

girn

noun
  • A vocalization similar to a cat's purring. 

verb
  • To make elaborate unnatural and distorted faces as a form of amusement or in a girning competition. 

  • To whinge, moan, complain. 

  • To grimace; to snarl. 

groaning

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

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

  • That groans. 

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