Central vs Wall

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). 

Wall

name
  • the Great Wall of China. 

  • A Chinese constellation located near Pegasus and Andromeda, one of the 28 lunar mansions and part of the larger Black Turtle. 

  • the Trump Wall. 

  • A village and civil parish in the City of Lichfield district, Staffordshire, England, United Kingdom (OS grid ref SK0906). 

  • A surname. 

  • A village in Gwinear-Gwithian parish, south-west Cornwall, England, United Kingdom (OS grid ref SW6036). 

  • A village and civil parish in south Northumberland, England, United Kingdom (OS grid ref NY9169); part of Hadrian's Wall is in the parish. 

  • A borough in Allegheny County, Pennsylvania, United States. 

  • A town in Pennington County, South Dakota, United States. 

  • An unincorporated community in Tom Green County, Texas, United States. 

  • the Berlin Wall. 

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