entertainer vs hard case

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. 

hard case

noun
  • An amusing, funny, witty, or possibly strange person. May be used as a term of endearment. 

  • A tough person. 

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