belly vs birth

belly

noun
  • The womb. 

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

  • The lower fuselage of an airplane. 

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

  • To cause to swell out; to fill. 

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

birth

noun
  • An instance of childbirth. 

  • A beginning or start; a point of origin. 

  • The process of childbearing; the beginning of life. 

  • That which is born. 

  • The circumstances of one's background, ancestry, or upbringing. 

adj
  • A familial relationship established by childbirth. 

verb
  • To bear or give birth to (a child). 

  • To produce, give rise to. 

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