The term "less" is a comparative adjective used to indicate a smaller amount or degree of something. It is often used in contrast to "more" to describe a reduction in quantity, quality, or intensity. For example, if you have three apples and you give away one apple, you have less than you started with. In mathematics, "less" is commonly used in inequalities. For instance, the expression "5 < 10" means that 5 is less than 10. This concept is essential in various fields, including economics, where it can describe lower costs or reduced demand for products.