Ramaytush vs San Francisco

Ramaytush

noun
  • One of eight divisions of the Ohlone Native American people of northern California. 

name
  • The spoken language of this people, an Ohlone dialect in the Utian family. 

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 Ramaytush and San Francisco occurred in a corpus of books? (source: Google Ngram Viewer )