french fries vs potato chip

french fries

noun
  • Strips of deep-fried potatoes that have been frenched (cut into strips). 

potato chip

noun
  • One of a batch of pieces of potato cut into elongated cubes and fried; a chip or chipped potato, usually larger than American french fries. 

  • A potato crisp, a thin slice of potato that has been fried. 

How often have the words french fries and potato chip occurred in a corpus of books? (source: Google Ngram Viewer )