agave vs pita

agave

noun
  • A plant of the genus Agave, which includes the maguey or century plant (Agave americana), which produces a gigantic flower stem at maturity. 

pita

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

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

  • The plant which yields the fiber. 

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