Usonia vs Yankee land

Usonia

name
  • The United States of America; a one-word name for the country that does not have the ambiguity of "America". 

  • Frank Lloyd Wright's utopian vision of the United States 

  • A community in New York state designed by Frank Lloyd Wright in his Usonian style 

  • In geopolitical and international economic modeling, a prototype superpower that, in competing with an antagonistic superpower Russonia (the Soviet Union), allows Thirdonia (a hypothetical neutral Third World country) to extract considerable wealth from both. 

Yankee land

name
  • The United States. 

  • New England. 

  • The northern states region of the United States. 

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