Frequency in poker refers to the proportion at which a specific action is executed in a given context, whether from an entire range or a specific hand combination. Bet, check, raise, and fold frequencies are solver-determined to maintain equilibrium and prevent exploitation. Identifying opponent frequency deviations, such as overfolding or overbluffing in specific situations, enables precise exploitative adjustments. Maintaining near-equilibrium frequencies in spots against unknown opponents protects against counter-exploitation.