bowel movement vs feculence

bowel movement

noun
  • The discharge of feces from the body, an act of defecation. 

  • The feces thus produced. 

feculence

noun
  • Feculent matter; dregs, filth. 

  • The state or quality of being feculent. 

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