ancon vs picklock

ancon

noun
  • A console that appears to support a cornice. 

  • The olecranon. 

  • The elbow. 

picklock

noun
  • A device designed to pick locks. 

  • One who picks locks; a thief. 

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