accommodation ladder vs driveway

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. 

driveway

noun
  • A short private road that leads to a house or garage. 

  • A road that enters or circulates through a defined area, such as an institution, compound, land area, etc., for the purpose of private access, maintenance, or security. 

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