entertainer vs superstar

entertainer

noun
  • A person who entertains others, esp. as a profession, as a singer, actor, presenter, dancer, musician, magician, comedian, etc. 

  • Someone who puts on a show for the entertainment or enjoyment of others. 

superstar

noun
  • Someone who has accumulated a vast amount of fame; a high-level celebrity. 

  • A giant star. 

  • An exceptionally productive employee. 

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