Merchant (noun)

1. A person or company involved in the trading of goods.
2. A person engaged in trade, typically on a large scale.
3. A retailer.
4. A wholesale trader.

Origin:

Middle english: from old french marchant, from marchand "trader", from latin mercat- "traded", from the verb mercari, from mercis "wares".

Examples:

1. He is a merchant of spices.
2. She is a merchant of cloth.
3. He is a merchant of jewelry.
4. She is a merchant of antiques.
5. He is a merchant of electronics.