Walter Mitty vs dreamer

Walter Mitty

noun
  • An imposter, especially one falsely claiming to have done military service. 

  • A sad or pathetic person given to flights of fancy; a daydreamer. 

dreamer

noun
  • One who dreams. 

  • swallow-wing puffbird (Chelidoptera tenebrosa) 

  • Any anglerfish of the family Oneirodidae. 

  • Someone whose beliefs are far from realistic. 

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