mall vs piazza

mall

noun
  • A pedestrianised street, especially a shopping precinct. 

  • A heavy wooden mallet or hammer used in the game of pall mall. 

  • A public walk; a level shaded walk, a promenade. 

  • An enclosed shopping centre. 

verb
  • to build up with the development of shopping malls 

  • to shop at the mall 

  • to beat with a mall, or mallet; to beat with something heavy; to bruise 

piazza

noun
  • A public square, especially in Italian cities. 

  • A roofed gallery or arcade (for example around a public square or in front of a building). 

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