San Fran vs San Francisco

San Fran

name

  • The city of San Francisco, California. 

San Francisco

name

  • A major coastal city in California of over 800,000 widely known for its unique culture, architecture, and LGBT population; formerly Yerba Buena (pre-1847). 

  • Any place or institution named after St. Francis. 

  • The extinct culture of the city of the same name also known as the Ramaytush. 

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