Futures
Futures A financial contract obligating the buyer to purchase an asset (or the seller to sell an asset), such as a physical commodity or a financial instrument, at a predetermined future date and price. Some futures contracts may call for physical delivery of the asset, while others are settled in cash. Futures can be used either to hedge or to speculate on the price movement of the underlying asset. For example, a producer of corn could use futures to lock in a certain price and reduce risk (hedge). On the other hand, anybody could speculate on the price movement of corn by going long or short using futures. The primary difference between options and futures is that options give the holder the right to buy or sell the underlying asset at expiration, while the holder of a futures contract is obligated to fulfil the terms of his/her contract.
future is no different then the equity....the only noticable difference is that it has a particular lot that you can take with expiry date on last thursday of the month. you can both buy or sell the future. also u have to pay only some percentage of the money(as directed by SEBI) like 20% 21% etc. the brokerage charged on futures is also less, the reason being that the future contract is just virtual settlement of shares or we can say that only money is transfered but the shares are not delivered. you can btst it or just intraday. the future you buy can be taken of any date like last thursday of this month, next month or coming month. the volatility of future of this month is the highest and decreases for the next month.