reality vs specter

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. 

specter

noun
  • Any of certain species of dragonfly of the genus Boyeria, family Aeshnidae. 

  • A ghostly apparition, a phantom. 

  • A threatening mental image. 

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