Con vs Precious

Con

name
  • A female given name, a diminutive form of Connie. 

  • A male given name, a diminutive form of Conor or Cornelius. 

Precious

name
  • A female given name from English. 

  • A surname transferred from the nickname, originating as a male or female nickname. 

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