Gnostic vs insightful

Gnostic

adj

  • Of, or relating to, intellectual or spiritual knowledge 

  • Of, or relating to Gnosticism 

noun

  • A believer in Gnosticism 

insightful

adj

  • Possessing insight. 

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