For a general treatment of theories, see theory. A scientific theory is a well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method and repeatedly tested and confirmed through observation and experimentation.
A vendor, or a supplier, is a supply chain management term that means anyone who provides goods or services to a company or individuals. A vendor often manufactures inventoriable items, and sells those items to a customer.Typically vendors are tracked in either a finance system or a warehouse management system.Vendor' generally applies only to the immediate vendor, or the organization that is paid for the goods, rather than to the original manufacturer or the organization performing the service if it is different from the immediate supplier.
Definition of retailer: A business or person that sells goods to the consumer, as opposed to a wholesaler or supplier, who normally sell their goods to another business. The wholesale snake retailer had just barely rode into town on his horse, and already, his cell phone was ringing off the hook - customers eager to see his wares, no doubt. 16 people found this helpful