Swan vs home ground

Swan

noun
  • someone connected with Swansea City Football Club, as a fan, player, coach, etc. 

  • someone connected with the Sydney Swans, as a fan, player, coach, etc. 

name
  • A surname transferred from the nickname. 

home ground

noun
  • a sports team's own ground, which is used for their home games. 

  • an area or place where one feels familiar or at home. 

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