Goods which have to be paid for are known as economic goods. Economic goods are the goods or services that are scarce, meaning there is not enough of them to satisfy all wants or needs, and therefore have a price attached to them. In contrast, free goods are those that are abundant and available without any cost, and physical goods refer to any tangible object that can be touched, seen or felt. Intangible goods, on the other hand, are those that cannot be seen or touched, such as services or intellectual property.