Blighty vs Knostrop

Blighty

name

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

noun

  • Synonym of Blighty one 

Knostrop

name

  • Synonym of Knowsthorpe, Leeds, West Yorkshire, England. 

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