What is the difference between PMP and PRINCE2?

PMP and Prince2 are two different things: PMP is based upon the PMBOK which is the Standard, NOT a methodology.it contains a truck load of processes and generally accepted techniques of project management by which to evaluate or complete the way you run your projects or the methodology you use. PMP is mostly followed in US based firms  with a membership of PMI, and PRINCE2 is mostly followed by UK based government and other private organizations.

PMP is a standard whereas Prince2 is a methodology.