slumber vs torpor

slumber

noun
  • A state of ignorance or inaction. 

  • The snooze button on an alarm clock. 

  • A very light state of sleep, almost awake. 

verb
  • To be inactive or negligent. 

  • To be in a very light state of sleep, almost awake. 

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 slumber and torpor occurred in a corpus of books? (source: Google Ngram Viewer )