Русско-англо-русский юридический словарь

A unitary enterprise is a government-owned corporation in Russia and some other post-Soviet states. Unitary enterprises are business entities that have no ownership rights to the assets that they use in their operations. This form is possible only for state and municipal enterprises, which respectively operate state or municipal property. The owners of the property of a unitary enterprise have no responsibility for its operation and vice versa. (Wikipedia)

Furthermore, there is also a specific difference between a letter of intent (LOI) and a memorandum of understanding (MOU); an LOI outlines the intent of one party toward another with regard to an agreement, and may only be signed by the party expressing that intent, whereas an MOU must be signed by all parties to be a valid outline of an agreement. Nevertheless, LOIs are fairly often incorrectly referred to as MOUs and vice versa. (Wikipedia)

An aleatory contract is a contract in which the performance of one or both parties is contingent upon the occurrence of a particular event. The most common type of aleatory contract is an insurance policy. Such an insurance contract may be a boon to one party but create a major loss for the other, as more in benefits may be paid out than actual premiums received, or vice versa. (Wikipedia)

In law, a reciprocal obligation, also known as a reciprocal agreement is a duty owed by one individual to another and vice versa. It is a type of agreement that bears upon or binds two parties in an equal manner. (Wikipedia)