author vs creator

author

noun
  • The originator or creator of a work, especially of a literary composition. 

  • Someone who writes books for a living. 

verb
  • To create a work as its author. 

creator

noun
  • Something or someone which creates or makes something. 

  • A player who creates opportunities for their team to score goals; a playmaker. 

  • The deity that created the world. 

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