opiate vs palliative

opiate

adj
  • Deadening; causing apathy or dullness. 

  • Soporific; inducing sleep or sedation. 

  • Relating to, resembling, or containing opium. 

noun
  • A drug, hormone or other substance derived from or related to opium. 

  • Something that dulls the senses and induces a false and unrealistic sense of contentment. 

verb
  • To treat with an opiate drug. 

palliative

adj
  • Minimising the progression of a disease and relieving undesirable symptoms for as long as possible, rather than attempting to cure the (usually incurable) disease. 

  • Serving to palliate; serving to extenuate or mitigate. 

noun
  • Something that palliates, particularly a palliative medicine. 

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