Greenhorn vs Prentice

Greenhorn

name
  • A census-designated place in Plumas County, California, United States. 

Prentice

name
  • A town and village therein, in Price County, Wisconsin, United States. 

  • A surname originating as an occupation. 

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