A. What is stock market crashing?
When there is immense panic selling, geopolitical tension and economic crisis then there occurs a stock market crashing. It happens sometimes only.
For example, famous Wall Street crash 1929.
B. Fundamental analysis versus technical analysis
Fundamental analysis is much different from technical analysis. Fundamental analysis focuses on measuring stock's (shares)intrinsic value whereas technical analysis concentrates on the trading and price history of stock by looking trading signals and other analytical tools to evaluate the strength or weaknesses of share or stock.