Bedlam vs Borstal

Bedlam

name

  • A hamlet in Bitterley parish, south Shropshire, England (OS grid ref SO5877). 

  • A hamlet in Clint cum Hamlets parish, Harrogate borough, North Yorkshire, England (OS grid ref SE2661). 

  • A hamlet in Great Elm parish, Mendip district, Somerset, England (OS grid ref ST7549). 

Borstal

name

  • A suburb, formerly a village, in Rochester, Medway borough, Kent, England (OS grid ref TQ7366). 

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