Swan vs pro

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. 

pro

noun
  • Professional. 

  • A prostitute. 

  • A professional sportsman. 

  • A chemical prophylaxis taken after sex to avoid contracting venereal disease. 

  • A person who supports a concept or principle. 

  • An advantage of something, especially when contrasted with its disadvantages (cons). 

adj
  • Professional. 

prep
  • In favor of. 

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