Pole vs string bean

Pole

noun

  • A person from Poland or of Polish descent. 

name

  • A surname. 

string bean

noun

  • A tall and thin person. 

  • A hyacinth bean (Lablab purpureus) 

  • Any long, slender green bean. 

  • An immature runner bean (Phaseolus coccineus) 

  • A yardlong bean (Vigna unguiculata subsp. sesquipedalis) 

  • A common bean (Phaseolus vulgaris) 

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