exhibitor vs organizer

exhibitor

noun
  • Someone who organizes an exhibition. 

  • Someone who exhibits something. 

organizer

noun
  • A person who arranges the details of a public event. 

  • A group of cells that, together with the evocator, control differentiation in the embryo; the inductor 

  • A hand-held micro-computer that will perform specific tasks; can be used as an electronic diary, alarm clock, recorder of memos and notes, a portable database etc. 

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