pipe dream vs reality

pipe dream

noun
  • A plan, desire, or idea that will not likely work; a near impossibility. 

reality

noun
  • The entirety of all that is real. 

  • The real world. 

  • The state of being actual or real; realness. 

  • An individual observer's own subjective perception of that which is real. 

  • A real entity, event, or other fact. 

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