preternatural vs psychic

preternatural

adj
  • Beyond or not conforming to what is natural or according to the regular course of things; strange. 

psychic

adj
  • Relating to the psyche or mind, or to mental activity in general. 

  • Relating to or having the abilities of a psychic. 

noun
  • In gnostic theologian Valentinus' triadic grouping of man the second type; a person focused on intellectual reality (the other two being hylic and pneumatic). 

  • A person who possesses, or appears to possess, extra-sensory abilities such as precognition, clairvoyance and telepathy, or who appears to be susceptible to paranormal or supernatural influences. 

  • A person who supposedly contacts the dead; a medium. 

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