fling vs forward roll

fling

noun
  • An act of moving the limbs or body with violent movements, especially in a dance. 

  • An act of throwing, often violently. 

  • A short romantic, oftentimes sexual, relationship. 

  • An attempt, a try (as in "give it a fling"). 

  • A lively Scottish country dance. 

  • An act or period of unrestrained indulgence. 

verb
  • To throw with violence or quick movement; to hurl. 

forward roll

noun
  • A movement in which one's body is rolled forward, by putting the head on the ground and swinging the legs over the head. 

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