Seller (noun)

1. A person or company that sells goods or services.
2. One who offers something for sale.
3. A vendor, merchant, or trader.
4. An individual or entity that disposes of an asset.

Origin:

Late middle english: from anglo-norman french, from old french seeler, from latin sellare "to saddle" (in medieval latin "to place on sal.e")

Examples:

1. The seller of the car was very helpful.
2. The seller gave us a good price for the house.
3. The seller was very knowledgeable about the product.
4. He is a seller of rare coins.
5. The company is a seller of agricultural products.