Don Quixote vs dreamer

Don Quixote

noun

  • Any person or character who displays quixotism. 

name

  • A famous 1605–1615 Spanish novel by Miguel de Cervantes (1547–1616), whose full title is El ingenioso hidalgo don Quijote de la Mancha (The Ingenious Gentleman Don Quixote of La Mancha). 

  • The protagonist of this novel. 

dreamer

noun

  • Someone whose beliefs are far from realistic. 

  • One who dreams. 

  • swallow-wing puffbird (Chelidoptera tenebrosa) 

  • Any anglerfish of the family Oneirodidae. 

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