It is a contract that recognizes reciprocal obligations in the receivables of the contracting parties, and it has multiple faces and cases:
For example, in terms of obligations and their order: the contract is binding on one side only, for example, the gift contract without compensation.
In terms of rescission of contracts: Rescission is only available in contracts binding on both parties, in the event that one of the parties to the contract does not fulfill its obligations, then the other party may request the termination of the contract.
In terms of bearing the liability of perishing: in contracts binding on both sides, the debtor bears the risk of perishing. As for contracts binding on one side, the crediting party bears the responsibility for this loss.