frijol vs green bean

frijol

noun
  • Any cultivated bean of the genus Phaseolus, especially the black seed of a variety of Phaseolus vulgaris. 

  • The bean-like seed of any of several related plants, such as the cowpea, used as food. 

green bean

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

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

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