lavash vs tortilla

lavash

noun
  • A soft, thin flatbread made with flour, water, yeast, and salt, baked in a tandoor. Toasted sesame seeds and/or poppy seeds are sometimes sprinkled on it before baking. Traditionally made in Armenia and other countries of the Caucasus and the Middle East. 

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 lavash and tortilla occurred in a corpus of books? (source: Google Ngram Viewer )