Borough vs Town

Borough

name
  • The area, properly called Southwark, just south of London Bridge, which is at the north end of Borough High Street (OS grid ref TQ3279). 

Town

name
  • London, especially central London. 

  • A surname. 

  • A community and ward in Merthyr Tydfil county borough, Wales. 

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