pedestrian vs soporific

pedestrian

adj
  • Ordinary, dull; everyday; unexceptional. 

  • Of or intended for those who are walking. 

  • Pertaining to ordinary, everyday movements incorporated in postmodern dance. 

noun
  • A walker; one who walks or goes on foot, especially as opposed to one who uses a vehicle. 

soporific

adj
  • Boring, dull. 

  • Tending to induce sleep. 

noun
  • Something boring or dull. 

  • Something inducing sleep, especially a drug. 

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