Swan vs mucker

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. 

mucker

noun
  • A person who removes muck (waste, debris, broken rock, etc.), especially from a mine, construction site, or stable. 

  • Friend, acquaintance. 

  • A comrade; a friendly, low-ranking soldier in the same situation. 

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