homecoming vs reunion

homecoming

noun
  • The act or event of returning home. 

  • In colleges and high schools, a tradition centred around a football game, a parade and the "coronation" of a Homecoming Queen. 

reunion

noun
  • The process or act of reuniting. 

  • A planned event at which members of a dispersed group meet together. 

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