booth vs megastore

booth

noun
  • A small stall for the display and sale of goods. 

  • An enclosure for keeping animals. 

  • An enclosure just big enough to accommodate one standing person. 

  • An enclosed table with seats, as in a diner or café. 

megastore

noun
  • A large supermarket or similar retail outlet; a superstore. 

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