Rebound: A temporary rise within a downward trend, representing a brief pause for the bears or a last struggle for the bulls; the trend remains unchanged.

Reversal: A fundamental change in the direction of the main trend, shifting from a decline to an increase or vice versa, indicating a qualitative change in the battle between bulls and bears.

Injection: Extreme instantaneous volatility driven by high-leverage contract markets, aimed at pinpointing and breaking the opponent's position (liquidating longs or shorts).