theory-a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena; theories can incorporate facts and laws and tested hypotheses; true in fact and theory.
wikiHow to Write Vendor Contracts. Some companies and organizations partner with vendors to provide a better product or service. Other businesses use vendors as contractors, providing something they need either on a one-time basis or an ongoing schedule. For example, many companies use vendors to supply technology, cleaning services, office equipment, or transportation. Anytime you use a vendor, you and the vendor should both sign a contract.
In a forward contract, the buyer and seller are private parties who negotiate a contract that obligates them to trade an underlying asset at a specific price on a certain date in the future. Since it is a private contract, it is not traded on an exchange but over the counter. futures contract is a standardized contract, traded on a futures exchange, to buy or sell a certain underlying instrument at a certain date in the future, at a specified price. Structure & Purpose. Customized to customer needs. Usually no initial payment required.