in the arms of Morpheus vs napping

in the arms of Morpheus

prep
  • Asleep, sleeping. 

  • In a state of being completely forgotten, or of unawareness. 

napping

noun
  • The act of taking a nap or short sleep. 

  • The act or process of raising a nap, as on cloth. 

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