Millionaires are individuals whose net worth is at least one million units of currency, typically measured in dollars. This wealth can come from various sources, including investments, real estate, business ownership, or inheritance. Millionaires often have financial assets that exceed their liabilities, allowing them to enjoy a higher standard of living. The term "millionaire" has evolved over time, especially with inflation and changes in the economy. Today, there are different categories of millionaires, such as self-made millionaires, who build their wealth from scratch, and inheritance millionaires, who receive their wealth from family.