nutty vs round the bend

nutty

adj
  • Containing nuts. 

  • Resembling or characteristic of nuts. 

  • Barmy, crazy, mad. 

round the bend

prep
  • Crazy, mad or insane. 

  • Close to or in close proximity to another location. 

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