Input (grade 13): Its usage in the term lingua franca originated from its meaning in Arabic, dating from before the Crusades, whereby all Europeans were called "Franks" or Faranji in Arabic.
Output (grade 7): Its usage in the term lingua franca came from its meaning in Arabic. That word came into use before the Crusades, when Europeans used to be called "Franks" or Faranji in Arabic.