lenitive vs relaxant

lenitive

noun
  • An analgesic or other source of relief from pain 

  • A laxative. 

adj
  • Mild; gentle. 

  • Analgesic, able to reduce pain or suffering. 

  • Laxative; easing the bowels. 

relaxant

noun
  • A drug or other agent that promotes relaxation. 

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