Borough vs Old 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). 

Old Town

name
  • A village in Wadsworth parish, Calderdale borough, West Yorkshire, England (OS grid ref SD9928). 

  • An area in the centre of Stockholm, Sweden; Gamla stan in Swedish. 

  • A city in Penobscot County, Maine, United States. 

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