The topic of stocks and shares is something that many people find confusing—especially when it comes to the English terms Stock and Share, because they are not actually the same word.

Put simply: Stock is a general term used to describe ownership in a company, while Shares are more specific. They refer only to ownership units in a company or in a mutual fund. When a company issues shares to sell, it is selling Stock to investors, and the people who buy become shareholders who receive various rights—such as dividends, a share of profits, or even voting rights in the company’s decision-making.

The key point is that if a company performs well, the stock price rises. Shareholders can then sell at a higher price and make a profit. While Shares may include stocks, they also cover other investment types such as ETFs or mutual funds.

So why does a company issue shares? Because it needs to raise funds—whether to pay off debt, launch new products, expand into new markets, or create new facilities. In short, it needs money to help the business grow.

And why do people buy shares? Besides hoping to profit from selling later, there are other reasons, such as dividends. When a company makes a profit, it distributes dividends to shareholders. There is also capital appreciation—when the stock price rises. In addition, shareholders have voting rights and influence over the company’s decisions.

As for the types of shares, there are mainly two: common stock (หุ้นสามัญ) and preferred stock (หุ้นบุริมสิทธิ). Common stock provides voting rights; dividends may vary depending on performance. Preferred stock places more emphasis on giving priority—offering fixed dividends, and paying out before common stock if the company is liquidated—but it has no voting rights.

If we divide shares by growth characteristics, there are growth stocks (หุ้นเติบโต), which are expected to grow faster than the market. Investors hope to profit from the company’s expansion. There are also value stocks (หุ้นคุณค่า), which come from established companies that already have steady profits, with prices that are lower than they should be—so risk is lower, but growth is slower. Both types have different risks and returns, depending on what kind of investment you choose.