lavash vs pita

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. 

pita

noun
  • A flat bread pouch used for making sandwiches such as gyros or falafels. 

  • The plant which yields the fiber. 

  • A fiber obtained from the Agave americana and related species, used for making cordage and paper. 

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