conjure up vs visualize

conjure up

verb
  • To create or produce something, seemingly magically. 

  • To call up or command a spirit or devil by an incantation. 

  • To generate (an image or an idea) in one's mind. 

visualize

verb
  • American spelling and Oxford British English spelling of visualise 

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