In English, "cheap" is used to describe something that is low in price or cost. On the other hand, "expensive" refers to something that is high in price or cost. When we say something is cheap, it means it is affordable and doesn't require a lot of money to purchase. On the contrary, when we say something is expensive, it means it is costly and may require a significant amount of money to acquire.
For example, if we are talking about buying a new car, a cheap car would be one that costs less money and might have fewer features or be of a lower quality. On the other hand, an expensive car would be one that costs a lot more money and might have more luxurious features or be of a higher quality.
It is important to note that the terms "cheap" and "expensive" are relative and can vary based on individual perspectives and financial situations. What may be considered cheap for one person may be expensive for another.