Futures and Options are types of derivatives. Derivatives derive their value from an underlying instrument like a stock, commodity, currency etc. The basic difference between Futures and Options is in the obligations bound on the buyers and sellers.
In Futures, both, buyers and sellers have an obligation to execute the contract on a specified date whereas in Options, the buyer has the right but not the obligation to execute the contract. Only the seller has the obligation to execute the contract.
The other difference between Futures and Options is in the limit of profit and loss for a buyer. A buyer in Futures market can make unlimited profit and loss. In the Options market, a buyer can make an unlimited profit but limited loss.