States vs United States

States

name
  • Those parts of the United States comprising states rather than territories. 

  • The parliament of either of the two Channel Islands countries: the States of Guernsey or the States of Jersey. 

United States

name
  • The collection of individual states of the United States of America. 

  • Federal nation consisting of several states, actual, historical or hypothetical. 

  • Includes the land area, internal waters, territorial sea, and airspace of the United States. 

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