fast food vs smorgasbord

fast food

noun
  • Food that is served quickly, often standardized and pre-prepared. 

  • Anything standardized, quickly available, and inexpensive, often, of low value. 

  • A type of food that is quickly made, but of low nutritional value; junk food. 

smorgasbord

noun
  • A Swedish-style buffet comprising a variety of cold sandwiches and other dishes; (by extension) any buffet with a wide selection of dishes. 

  • An abundant and diverse collection of things. 

How often have the words fast food and smorgasbord occurred in a corpus of books? (source: Google Ngram Viewer )