CO vs Colorado

CO

Colorado

name
  • A major river of western North America, running from the Rocky Mountains in the United States to the Gulf of California in Mexico. 

  • A state in the western United States, the 38th state. Capital and largest city: Denver. 

  • A municipality of Paraná, Brazil. 

  • A river in southern Argentina, running from the Andes into the Atlantic. 

  • A ghost town in California, United States. 

  • A river in Texas in the United States, flowing into the Gulf of Mexico. 

  • A municipality of Rio Grande do Sul, Brazil. 

  • The Territory of Colorado, a former territory of the United States. 

  • An unincorporated community in Texas, United States. 

  • A village in the Dominican Republic. 

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