Short selling is a strategy in the financial markets where an investor sells borrowed shares of a stock with the expectation that the price will decline. This differs fundamentally from traditional buying of stocks, where investors purchase shares with the hope that their value will increase over time.

In traditional buying, investors buy shares of a company's stock and become shareholders, entitling them to ownership rights, such as voting rights and dividends if applicable. They profit from price appreciation, meaning they sell their shares at a higher price than they bought them for.

On the other hand, short selling involves borrowing shares from a broker or another investor and selling them on the open market. The short seller aims to buy back the shares at a lower price in the future, returning them to the lender and pocketing the difference as profit. This means short sellers profit when the price of the stock falls.

Moreover, short selling introduces a unique risk profile. While traditional investors face the risk of losing their initial investment if the stock price drops to zero, short sellers face potentially unlimited losses if the stock price rises significantly. Additionally, short sellers must pay any dividends that accrue on the borrowed shares while they are held short. Overall, short selling offers a different approach to profiting from market movements compared to traditional buying of stocks.