green bean vs lentil

green bean

noun
  • The immature pods of any kind of bean plant, eaten as a vegetable. 

  • The immature pods of numerous varieties of the common bean, Phaseolus vulgaris. 

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 green bean and lentil occurred in a corpus of books? (source: Google Ngram Viewer )