noun
unilateral contract
Legal term for a contract in which only one party assumes an obligation, such as a gift or a guarantee. Contrasts with 双務契約 (bilateral contract).
贈与契約は片務契約の代表例です。
A gift contract is a typical example of a unilateral contract.
片務契約では、一方
In a unilateral contract, only one party bears an obligation.