Frosty vs Nobby

Frosty

name

  • A generic name for a snowman. 

Nobby

name

  • A diminutive of the male given name Norbert. 

  • Nickname for a person with the surname Clark or Clarke. 

  • A diminutive of the female given name Zenobia. 

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