plaza vs strip mall

plaza

noun
  • A shopping mall. 

  • A town's public square. 

  • A strip mall. 

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

strip mall

noun
  • A shopping center consisting of a row of stores with separate entrances from the outdoors, typically along a road and/or with a parking lot in front. 

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