Hell's Kitchen vs sink estate

Hell's Kitchen

name
  • Any neighborhood with a reputation for poverty and crime. 

  • A neighborhood of Manhattan, New York City, United States, also known as Clinton, that was historically known for poor living conditions. 

sink estate

noun
  • A council estate characterised by high levels of economic and social deprivation, often associated with high crime rates. 

How often have the words Hell's Kitchen and sink estate occurred in a corpus of books? (source: Google Ngram Viewer )