diva vs idol

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. 

idol

noun
  • A popular entertainer, usually young, captivating and attractive, and often female, with an image of being close to fans. 

  • A cultural icon, or especially popular person. 

  • A graven image or representation of anything that is revered, or believed to convey spiritual power. 

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