Swan vs acquaintance

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. 

acquaintance

noun
  • A state of being acquainted with a person; originally indicating friendship, intimacy, but now suggesting a slight knowledge less deep than that of friendship; acquaintanceship. 

  • Personal knowledge (with a specific subject etc.). 

  • Such people collectively; one's circle of acquaintances (with plural concord). 

  • A person or persons with whom one is acquainted. 

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