barmy vs round the bend

barmy

adj
  • Containing barm, i.e. froth from fermented yeast. 

  • Odd, strange, or crazy. 

round the bend

prep
  • Crazy, mad or insane. 

  • Close to or in close proximity to another location. 

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