drugstore vs supermarket

drugstore

noun
  • Synonym of pharmacy, especially a small standalone general store which includes a pharmacy. 

supermarket

noun
  • A large self-service store that sells groceries and, usually, medications, household goods, and/or clothing. 

  • A chain of such stores. 

  • A one-stop shop; a place offering a range of products or services. 

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