grocery vs supermarket

grocery

noun
  • A shop or store that sells groceries; a grocery store. 

  • retail foodstuffs and other household supplies. 

verb
  • To go grocery shopping. 

  • To furnish with groceries. 

supermarket

noun
  • A chain of such stores. 

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

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

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