A Public-Private Partnership (PPP), as defined above, comprises a long-term contract between a government entity and a private firm. However, this broad definition encompasses a range of contract types, which can be described in different ways-there is no standard, internationally accepted definition of PPP, and different jurisdictions use different nomenclature to describe similar projects. This section describes in more detail the range of PPP contract types under the definition of PPP used in this Reference Guide; and some of the more common terminology used globally to describe PPPs.