sleeping vs snoring

sleeping

noun
  • The state of being asleep, or an instance of this. 

adj
  • Asleep. 

  • Used for sleep; used to produce sleep. 

snoring

noun
  • The action or sound of breathing during sleep with harsh, snorting noises caused by vibration of the soft palate. 

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