GRE instead of GMAT?

YES. Although the GMAT is tougher than the GRE, a new trend has emerged in B- school admissions – the use of the GRE score instead of the GMAT score.
It’s not that there are no similarities between the two tests. In fact there are more overlaps than differences.
Overlaps
- analytical writing essays are common to both – includes both topics- issue and argument.
- both tests comprise a math and a verbal section
- areas tested in math are more or less the same, though the questions are presented differently.
-reading coprehension is more or less on similar lines.
- language competence is integral to both tests- grammar in the GMAT, diction in the GRE.