incept vs initiate

incept

verb
  • To begin. 

  • To take in or ingest. 

  • To put an idea into a person's mind so deeply that they believe it was their own. Inspired by the movie Inception (2010) and used by Mark Zuckerberg & Yuval Noah Harari in Conversation at 01:23:00. 

  • To be accepted to the Master of Arts degree at Oxford or Cambridge University. 

initiate

verb
  • To begin; to start. 

  • To instruct in the rudiments or principles; to introduce. 

  • To do the first act; to perform the first rite; to take the initiative. 

  • To confer membership on; especially, to admit to a secret order with mysterious rites or ceremonies. 

noun
  • One who is oriented in and familiar with a topic or subject; especially, one who is an expert in it. 

  • A new member of an organization. 

  • One who has been through a ceremony of initiation. 

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