Why do economists use the term law when they describe demand?

Economists use the term "law" in the context of demand to signify a consistent and observable relationship between price and quantity demanded, known as the Law of Demand. This principle states that, all else being equal, as the price of a good decreases, the quantity demanded by consumers increases, and vice versa. The term "law" implies a general rule that holds true across various market conditions, reflecting predictable consumer behavior. However, it's important to note that this "law" can be influenced by factors such as consumer preferences, income levels, and the availability of substitutes.