belly vs writhe

belly

verb
  • To position one’s belly; to move on one’s belly. 

  • To swell and become protuberant; to bulge or billow. 

  • To cause to swell out; to fill. 

noun
  • The stomach. 

  • The main curved portion of a knife blade. 

  • The abdomen, especially a fat one. 

  • The part of anything which resembles (either closely or abstractly) the human belly in protuberance or in concavity; often, the fundus (innermost part). 

  • The womb. 

  • The hollow part of a curved or bent timber, the convex part of which is the back. 

  • The lower fuselage of an airplane. 

writhe

verb
  • To contort (a part of the body). 

  • To twist bodily; to contort one's self; to be distorted. 

  • To twist, wring (something). 

  • To extort. 

noun
  • A contortion. 

  • The number of negative crossings subtracted from the number of positive crossings in a knot 

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