ascent vs belly flop

ascent

noun
  • The act of ascending; a motion upwards. 

  • An increase, for example in popularity or hierarchy 

  • The ascender height in a typeface. 

  • The degree of elevation of an object, or the angle it makes with a horizontal line; inclination; gradient; steepness 

  • The way or means by which one ascends. 

  • An eminence, hill, or high place. 

belly flop

noun
  • A style of diving into a body of water in which the surface impact is made mostly by one's abdomen. 

verb
  • To perform this type of dive. 

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