Barbican vs Duck

Barbican

name
  • A neighbourhood and residential estate in the City of London, Greater London, England (OS grid ref TQ3281) 

  • A neighbourhood in Plymouth, Devon, England (OS grid ref SX4854). 

Duck

name
  • A town in North Carolina. 

  • A surname transferred from the nickname. 

  • An unincorporated community in West Virginia. 

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