Though ETS has declared for the Revised GRE that it tests the word knowledge on the basis of contextual meaning, but there might be words which the test makers consider easy but the non native English speakers who take the test find to be difficult.
To the ease of such test takers, a word list is attached which may help them prepare words which have been commonly used in GRE till so far.
To download the word list, please click here : GRE Word List