french fries vs hash browns

french fries

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

hash browns

noun
  • Potatoes that have been finely chopped (i.e. hashed) and fried until browned. 

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