comatose vs somnorific

comatose

adj
  • Fast asleep. 

  • In a coma: unconscious. 

  • Drowsy or lethargic. 

verb
  • To make comatose; to send into, or as if into, a coma. 

somnorific

adj
  • soporific; inducing sleep 

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