A more thorough explanation:

A supplier is a person or company that provides goods or services to another person or company. They can be the seller, manufacturer, or anyone else in the chain who makes the product available to the consumer.

For example, if you own a restaurant, your supplier would be the company that provides you with the food and ingredients you need to make your dishes. Or, if you own a clothing store, your supplier would be the company that provides you with the clothes you sell.

Another example of a supplier is a landlord who gives possession of a property to a tenant for their use or allows someone else to use or occupy it while it is in the landlord's possession or control.

Suppliers are important because they provide the goods and services that businesses need to operate and serve their customers. Without suppliers, businesses would not be able to function.