Freehold vs Principality

Freehold

name

  • A borough of New Jersey, United States; properly, Freehold Borough. 

  • A hamlet in Greenville, Greene County, New York, United States. 

  • A township in New Jersey, United States; properly, Freehold Township. 

  • An urban area of Werneth, Oldham, Greater Manchester, England (OS grid ref SD9104). 

Principality

name

  • Wales 

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