green bean vs snow pea

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. 

snow pea

noun
  • A group of pea (Pisum sativum) cultivars, with flat and edible pods. 

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