Preposition: of

• non-proliferation: We emphasize that the NPT remains the cornerstone of nuclear non-proliferation.

• stability: Should the very cornerstone of strategic stability become eroded, we will have a big problem of putting things in check in this area.

• democracy: Elections may well be the cornerstone of any democracy - therein lies the rub.

• broadcasting: We emphatically agree that ' The BBC should remain the cornerstone of public service television broadcasting.

• regime: The NPT is the cornerstone of the international nuclear non-proliferation regime, supported by almost every country in the world.

• society: Access to justice is a cornerstone of a fair society.

Converse of object

• remain: Over four decades later, their principles remain the cornerstone of every home we build.

• lay: The first chapter lays a solid cornerstone to the framework of the book.

• become: They have become a cornerstone of the Chamber's activity.

• form: Their world-famous carpets form a rich cornerstone to any home interior.

• represent: It represents a cornerstone of our commitment to improving Working Lives.

• consider: This means that surgery is still to be considered the cornerstone of therapy for the groin nodes in women with vulvar cancer.

Adjective modifier

• chief: He is the Builder, he is the head, he is the chief cornerstone, he is the living Stone.

• fundamental: Acknowledging the presence of some rare fragile populations of native trout could act as a fundamental cornerstone in this reform.

• vital: You don't have to be Einstein, Newton or Socrates to know that education is a vital cornerstone in our modern lives.

• essential: A wealth of new information and updated coverage makes the 8th Edition an essential cornerstone for every psychiatric practice.

• cultural: At the cultural cornerstone of this new, dynamic town-centre hub will be our very own, purpose-built DanceHouse.

• important: This guidance often formed an important cornerstone of a school's approach.

Modifies a noun

• mission: Darwin is not currently an approved mission but it is a strong candidate for a future cornerstone mission within ESA's Cosmic Vision program.

• policy: A policy cornerstone We move on to a cornerstone policy of the Lib Dems Election manifesto: free personal care for older people.