Crackpot vs Shelve

Crackpot

name
  • A village in Swaledale, North Yorkshire, England 

Shelve

name
  • A hamlet in Worthen with Shelve parish, western Shropshire, England (OS grid ref SO3399). 

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