creak vs groaning

creak

noun
  • The sound produced by anything that creaks; a creaking. 

verb
  • To make a prolonged sharp grating or squeaking sound, as by the friction of hard substances. 

  • To produce a creaking sound with. 

  • To suffer from strain or old age. 

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 creak and groaning occurred in a corpus of books? (source: Google Ngram Viewer )