rousing vs soporific

rousing

adj
  • That rouses or excites. 

noun
  • The act by which somebody or something is roused. 

soporific

adj
  • Boring, dull. 

  • Tending to induce sleep. 

noun
  • Something boring or dull. 

  • Something inducing sleep, especially a drug. 

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