Crossover vs Histogram

A crossover occurs when one technical line passes through another on a chart — such as the MACD line crossing the signal line or two moving averages crossing — generating a buy or sell signal based on the direction of the cross.

The histogram in MACD is a bar chart displayed below the price chart that visualizes the distance between the MACD line and signal line, showing whether momentum is accelerating or decelerating in the current trend direction.