Final answer:
A customer or consumer is a person or organization that purchases or uses products or services. They are essential to the economy, buying both durable and non-durable goods as well as services to satisfy their needs.
Step-by-step explanation:
Someone who uses or purchases a product or service is known as a customer or a consumer. These terms describe a person or organization that pays for goods or services, either directly or through the act of purchasing a product. Every purchase a customer or consumer makes is predicated on the belief that the good or service will provide satisfaction, with the decision-making process influenced by the information available to them. Consumers play a critical role in the economy by purchasing consumer goods, which are intended for direct use, such as shoes and cars, and services that satisfy their wants and needs. These can range from non-durable goods, like writing paper and food products, to durable goods, like televisions and refrigerators.