Option, the buyer has the right to deliver and the obligation to give up, and the seller only obeys the buyer's obligation. Option fee is actually called royalty, which is the fee obtained by the seller when selling the right.

Futures are called margin to ensure the buyer's purchasing power.

Option, also known as option, is a derivative financial instrument. It refers to the buyer's right to buy or sell a certain number of specific subject matter from the seller at a pre-agreed price (referring to the strike price) in the future (referring to American options) or on a specific date (referring to European options), but it has no obligation to buy or sell (that is, the option buyer has the right to choose whether to buy or sell, and the option seller must unconditionally obey the buyer's choice and fulfill the promise at the time of trading).

Futures and spot are completely different. Spot is actually a tradable commodity. Futures are mainly not commodities, but standardized tradable contracts with certain mass products such as cotton, soybeans and oil and financial assets such as stocks and bonds as the targets. Therefore, the subject matter can be commodities (such as gold, crude oil and agricultural products) or financial instruments.