dosa vs tortilla

dosa

noun
  • A type of thin south Indian pancake made from fermented lentils and rice blended with water, typically served with chutney or sambar. 

tortilla

noun
  • A flat round bread made out of cornmeal or flour. 

  • Spanish omelette; an omelette containing potatoes and onions. 

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