Momentum
The rate of change of price — how fast and with what force price is moving in a given direction.
Momentum describes whether price is accelerating or decelerating. High momentum means price is covering ground quickly; fading momentum is often the first warning that a move is losing conviction before price itself reverses.
Momentum is measured with oscillators (RSI, MACD, Rate of Change) and observed directly in price — wide-range candles with closes near highs/lows indicate strong momentum; small-body candles with large wicks indicate it is fading. Divergence between price and a momentum indicator is one of the most-watched signals in technical analysis.