belly vs stumble

belly

verb
  • To cause to swell out; to fill. 

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

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

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. 

stumble

verb
  • To cause to stumble or trip. 

  • To trip or fall; to walk clumsily. 

  • To make a mistake or have trouble. 

  • To strike or happen (upon a person or thing) without design; to fall or light by chance; with on, upon, or against. 

  • To mislead; to confound; to cause to err or to fall. 

noun
  • An error or blunder. 

  • A fall, trip or substantial misstep. 

  • A clumsy walk. 

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