fart vs shart

fart

verb
  • To emit digestive gases from the anus; to flatulate. 

  • To emit (fumes, gases, etc.). 

  • To waste time with idle and inconsequential tasks; to go about one's activities in a lackadaisical manner; to be lazy or over-relaxed in one's manner or bearing. 

noun
  • An irritating person; a fool. 

  • (usually as "old fart") An elderly person; especially one perceived to hold old-fashioned views. 

  • An emission of digestive gases from the anus; a flatus. 

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 fart and shart occurred in a corpus of books? (source: Google Ngram Viewer )