evacuant vs laxative

evacuant

noun

  • something used to clean out an organ system, especially the bowels 

  • a laxative 

adj

  • laxative 

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 evacuant and laxative occurred in a corpus of books? (source: Google Ngram Viewer )