stupor vs torpor

stupor

noun
  • A state of extreme apathy or torpor resulting often from stress or shock. 

  • A state of greatly dulled or completely suspended consciousness or sensibility; (particularly medicine) a chiefly mental condition marked by absence of spontaneous movement, greatly diminished responsiveness to stimulation, and usually impaired consciousness. 

verb
  • To place into a stupor; to stupefy. 

torpor

noun
  • A state of apathy or lethargy. 

  • A state similar to hibernation characterised by energy-conserving, very deep sleep. 

  • A state of being inactive or stuporous. 

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