dreamer vs idealist

dreamer

noun
  • Someone whose beliefs are far from realistic. 

  • One who dreams. 

  • swallow-wing puffbird (Chelidoptera tenebrosa) 

  • Any anglerfish of the family Oneirodidae. 

idealist

noun
  • Someone whose conduct stems from idealism rather than from practicality. 

  • An unrealistic or impractical visionary. 

  • One who adheres to idealism. 

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