accommodation ladder vs twitchel

accommodation ladder

noun
  • The property ladder, without the implication of necessarily owning the place where one lives. 

  • a flight of stairs or a ladder for lowering over the side of a ship for access to and from a small boat. 

twitchel

noun
  • A narrow alleyway between houses; a ginnel. 

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