dormant vs hypnic

dormant

adj
  • In a sleeping posture; distinguished from couchant. 

  • Inactive, sleeping, asleep, suspended. 

  • Leaning. 

noun
  • A crossbeam or joist. 

hypnic

adj
  • That induces sleep. 

noun
  • Any sleep-inducing drug. 

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