Nifty monthly chart analysis

1) OVER EXTENDED ZONE
when nifty strong bullish or bearish that time nifty make over extended zone

2) NIFTY BULLISH CYCLE
after market correction nifty move bullish trend ( 2004 TO 2007 & 2012 TO 2015 & 2017 TO 2020)

3) 30% above fall short period called CRASH MARKET
below 10% fall called normal down
10 to 20 % fall called correction market
more than 20% fall called bear market