thrift shop vs warehouse club

thrift shop

noun
  • A shop which sells mainly used goods (especially clothes) at low prices. 

warehouse club

noun
  • A large retail store holding a wide selection of goods for sale at discounted prices to members of the club. 

  • The club itself. 

How often have the words thrift shop and warehouse club occurred in a corpus of books? (source: Google Ngram Viewer )