realistic vs round the bend

realistic

adj
  • Relating to the representation of objects, actions or conditions as they actually are or were. 

  • Expressed or represented as being accurate, practicable, or not idealistic. 

round the bend

prep
  • Crazy, mad or insane. 

  • Close to or in close proximity to another location. 

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