organizer vs promoter

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. 

promoter

noun
  • One who promotes entertainment events or goods. 

  • The section of DNA that controls the initiation of RNA transcription as a product of a gene. 

  • An accelerator of catalysis that is not itself a catalyst. 

  • One who promotes. 

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