What is the difference between GMAT and GRE?

The GMAT or Graduate Management Admission Test, as its name suggests, is for admission to management or business school while the GRE or Graduate Record Exam is for graduate school. In other means, GRE is for general graduate school other than business school.

In general, nearly all MBA program requires GMAT score. The PhD program in business school also accepts GRE score for admission though all of them also accept GMAT scores.