Central vs Isle

Central

name
  • An area in Hong Kong. 

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

  • 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). 

Isle

name
  • A city in Minnesota. 

  • A river in southwestern France, which flows into the Dordogne. 

  • A river in Somerset, England, which flows into the River Parrett. 

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