discount store vs storehouse

discount store

noun
  • A type of department store which sell products at prices lower than those asked by other department stores. 

storehouse

noun
  • A building for keeping goods of any kind, especially provisions. 

  • A single location or resource where a large quantity of something can be found. 

verb
  • To lay up in store. 

How often have the words discount store and storehouse occurred in a corpus of books? (source: Google Ngram Viewer )