common bean vs snow pea

common bean

noun
  • An herbaceous annual plant (Phaseolus vulgaris), grown for its edible bean. 

  • A bean of such a plant, varying in size, shape and especially color. 

snow pea

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

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