exhibition vs trade fair

exhibition

noun
  • A large-scale public showing of objects or products. 

  • An instance of exhibiting, or something exhibited. 

  • A demonstration of personal skill or feelings. 

  • A financial award or prize given to a student (who becomes an exhibitioner) by a school or university, usually on the basis of academic merit. 

  • A game which does not impact the standings for any major cup or competition. 

  • A public display, intentional or otherwise, generally characterised as negative, a shameful exhibition or a disgusting exhibition 

trade fair

noun
  • An exhibition at which members of a specific industry exhibit or demonstrate their products to prospective customers and to each other 

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