Meaning of ADVANTAGE in English
Where the current position of the game favours one side over another. A material advantage refers to having a higher point count than the opponent. A permanent advantage is one with a lasting effect, such as an advantage in material or superior pawn structure. A positional advantage is an advantage in time, space, mobility, pawn structure, or control of critical squares. A temporary advantage is one that may eventually disappear, such as a lead in development.
English glossary of chess terms. Английский глоссарий шахматных терминов. 2012