Stock Market: The stock market is a marketplace where shares of publicly traded companies are bought and sold. Investors engage in speculation by buying and selling stocks in anticipation of price movements.
Futures Contract: A futures contract is an agreement to buy or sell an asset at a predetermined price on a specified date in the future. Speculators use futures contracts to speculate on the future value of commodities, currencies, or financial instruments.
Bubble: A bubble refers to a situation where prices for certain assets rise rapidly and exceed their intrinsic value due to excessive speculation. When the bubble bursts, prices collapse, leading to significant losses for speculators who bought at inflated prices.