Borough vs Central

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). 

Central

name
  • The Central Line of the London Underground, originally known as the Central London Railway. 

  • An area in Hong Kong. 

  • A former local government region in central Scotland, created in 1975 mainly from Stirlingshire, abolished in 1996 and divided into 3 council areas: Clackmannanshire, Falkirk and Stirling (which were districts within the region). 

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