break wind vs shart

break wind

verb
  • To expel gases generated during digestion, especially through the anus; to fart or flatulate. 

shart

verb
  • To unintentionally defecate due to relaxing the anus to flatulate. 

noun
  • An instance of sharting. 

  • The resulting excrement from sharting. 

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