Manhattan Prep's 500 Essential Words: GRE Vocabulary Flashcards go above and beyond other GRE flash cards on the market. Designed to help students develop a lasting understanding of words in a GRE-relevant context, the backs of all cards contain easy-to-understand definitions plus additional tools to facilitate learning, like usage notes, related words, etymology, and more.500 Essential Words is the first in a 2-volume set of GRE flash cards--start with essential words and graduate to advanced vocabulary with 500 Advanced Words. Together, the sets comprise the most comprehensive vocabulary study tool on the market.