enema vs laxative

enema

noun
  • An injection of fluid into the large intestine by way of the rectum, usually for medical purposes. 

  • The fluid so injected. 

  • A device for administering such an injection. 

laxative

noun
  • Any substance, such as a food or in the form of a medicine which has a laxative effect. 

adj
  • Having the effect of moving the bowels, or aiding digestion and preventing constipation. 

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