agora vs arcade

agora

noun
  • A marketplace, especially in Classical Greece. 

  • Since 1960, a monetary unit and coin of Israel, the 100th part of a shekel / sheqel. 

  • A place for gathering. 

arcade

noun
  • A covered passage, usually with shops on both sides. 

  • An establishment that runs coin-operated games. 

  • A row of arches. 

verb
  • To cover (something) as with a series of arches. 

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