in a reverie vs reflecting

in a reverie

reflecting

noun
  • An instance of reflection 

adj
  • That reflects. 

  • Having a component that reflects light. 

  • Given to introspection; thoughtful, reflective. 

  • That has been reflected (of light, sound etc.); undergoing reflection. 

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