A more thorough explanation:

A seller is a person or business that sells goods or property to a buyer. This can be an individual selling something on a small scale, or a large corporation selling products on a global scale.

• A farmer selling their crops to a grocery store
• An online retailer selling clothing to customers
• A car dealership selling cars to customers

These examples illustrate the concept of a seller because in each case, there is someone or something selling goods or property to a buyer. The farmer is selling their crops to a grocery store, the online retailer is selling clothing to customers, and the car dealership is selling cars to customers. In each case, the seller is providing a product or service in exchange for payment from the buyer.