actress vs diva

actress

noun
  • A female who performs on the stage or in films. 

diva

noun
  • Any female celebrity, usually a well known singer or actress. 

  • A person who may be considered or who considers herself (or by extension himself) much more important than others, has high expectations of others and who is extremely demanding and fussy when it comes to personal privileges. 

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