A "Type Chart" is a tool commonly used in games, especially in the Pokémon series, to illustrate the effectiveness of different types of attacks against various opponents. Each type, such as Fire, Water, or Grass, has strengths and weaknesses against others, helping players strategize their moves during battles. In a Type Chart, interactions are typically displayed in a grid format, where one axis lists the attacking types and the other lists the defending types. This allows players to quickly see how effective an attack will be, whether it is super effective, not very effective, or has no effect at all.