Gap analysis- The difference between the trading range.It indicates the strength of market.
Area-Appear inside the trading range.
Breakout-Appear after the price breakout the trading range.
Runaway gap-Appear after the breakout and it may extend the rally due to unwinding of existing the position with close price at days high.
Exhaustion gap -Appear after the trending zone seems to be runaway gap and it getting filled on the same day with close price at days low.