Frisco vs San Franfreako

Frisco

name

  • A nickname for San Francisco. 

  • A city in California, United States 

  • A city in Texas, United States, within the greater Dallas-Fort Worth area 

San Franfreako

name

  • San Francisco. 

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