Gnostic vs Observant

Gnostic

noun
  • A believer in Gnosticism 

adj
  • Of, or relating to Gnosticism 

  • Of, or relating to, intellectual or spiritual knowledge 

Observant

noun
  • A member of a Franciscan order that strictly observes the rules of St. Francis. 

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