Blighty vs Sound

Blighty

name

  • Great Britain, Britain, or England, especially as viewed from abroad. 

noun

  • Synonym of Blighty one 

Sound

name

  • Synonym of Plymouth Sound, Devon, England. 

  • The strait that separates Zealand (an island of Denmark) from Scania (part of Sweden); also sometimes called by the Danish name, Øresund. 

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