Options and Futures are both derivative contracts that let traders gain leveraged exposure to an underlying asset, but they differ fundamentally in obligation. An option gives the buyer the right, but not the obligation, to buy or sell at a set price before expiration, while a futures contract obligates both parties to complete the transaction on a specific future date.
Traders compare them because that single difference in obligation cascades into everything else — capital requirements, maximum loss potential, complexity, and the market conditions each instrument is best suited for.