meditation vs reverie

meditation

noun
  • A devotional exercise of, or leading to contemplation. 

  • A contemplative discourse, often on a religious or philosophical subject. 

  • Careful and thorough thought. 

  • A musical theme treated in a meditative manner. 

reverie

noun
  • A state of dreaming while awake; a loose or irregular train of thought; musing or meditation; daydream. 

  • An extravagant conceit of the imagination; a vision. 

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