new age vs sibylline

new age

noun
  • New Age music. 

  • A modern spiritual and religious movement, covering a wide variety of alternative spiritual and philosophical ideas, that developed towards the end of the 20th century. 

adj
  • Of or relating to New Age music. 

  • Of or relating to the New Age movement. 

sibylline

noun
  • One of the Sibylline Oracles or Sibylline Books. 

adj
  • Having oracle-like predicting powers, clairvoyant. 

  • Occult, mysterious. 

  • Of or pertaining to or resembling a sibyl or female oracle, especially the Cumaean Sibyl and the Sibylline Books. 

  • Excessively and exorbitantly expensive. (In allusion to the Sibyl who sold three books to Tarquinius Superbus at the price of the original nine.) 

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