common bean vs kidney bean

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. 

kidney bean

noun
  • A variety of common bean, Phaseolus vulgaris, with a dark-red skin. 

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