crystal-gazing vs second sight

crystal-gazing

noun
  • The action or practice of gazing into a crystal ball in the hope or belief of seeing the future. 

  • The making of predictions about the future, especially when these are seen as very speculative. 

second sight

noun
  • An additional sense beyond the five normal ones; the ability to see things that are not detectable by normal sight; clairvoyance; extrasensory perception. 

  • Synonym of senopia 

How often have the words crystal-gazing and second sight occurred in a corpus of books? (source: Google Ngram Viewer )