broad bean vs lentil

broad bean

noun
  • An edible bean that has broad seeds, Vicia faba. 

lentil

noun
  • The seed of these plants, used as food. 

  • Any of several plants of the genus Lens, especially Lens culinaris, from southwest Asia, that have edible, lens-shaped seeds within flattened pods. 

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