hard case vs kidder

hard case

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

  • A tough person. 

kidder

noun
  • One who kids, or teases light-heartedly. 

  • A term of endearment/address for a child or young adult, usually male. 

  • A kidderminster (carpet) 

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