green bean vs runner bean

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. 

runner bean

noun
  • The pods, sliced, as a vegetable. 

  • A climbing plant, Phaseolus coccineus, having long bean pods. 

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