Common shares represent ownership in a company and are a fundamental way for businesses to raise capital. When individuals purchase common shares, they become shareholders and gain a claim on the company's assets and earnings. Common shares typically come with voting rights, allowing shareholders to participate in important company decisions, such as electing the board of directors. The value of common shares can fluctuate based on the company's performance and market conditions. Shareholders may receive dividends, which are a portion of the company's profits distributed to them, but these are not guaranteed. Investing in common shares can be a way to build wealth over time, but it also carries risks, as the value can decrease.