marketplace vs plaza

marketplace

noun
  • An open area in a town housing a public market. 

  • A place or sphere for the exchange of anything, such as ideas or fashions. 

  • The world of commerce and trade. 

  • The space, actual or metaphorical, in which a market operates. 

plaza

noun
  • A town's public square. 

  • A shopping mall. 

  • A strip mall. 

  • An open area used for gathering in a city, often having small trees and sitting benches. 

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