reverie vs rumination

reverie

noun
  • An extravagant conceit of the imagination; a vision. 

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

rumination

noun
  • Deep thought or consideration. 

  • The act of ruminating; i.e. chewing cud. 

  • Negative cyclic thinking; persistent and recurrent worrying or brooding. 

  • An eating disorder characterized by repetitive regurgitation of small amounts of food from the stomach. 

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