Русско-англо-русский юридический словарь

A hostage is a person or entity which is held by one of two belligerent parties to the other or seized as security for the carrying out of an agreement, or as a preventive measure against war. However, in contemporary usage, it means someone who is seized by a criminal abductor in order to compel another party such as a relative, employer, law enforcement, or government to act, or refrain from acting, in a particular way, often under threat of serious physical harm to the hostage(s) after expiration of an ultimatum. (Wikipedia)

A servitude cannot impose the performance of a positive duty on the owner of the burdened property but only duties either to refrain from exercising certain rights to which an owner could be otherwise entitled (negative servitude) or to suffer certain things to be done to his property which an owner otherwise could be entitled to forbid or resist (positive servitude). (Wikipedia)

An application for interlocutory injunction is a request to the Court that in the peculiar circumstance of the particular case, justice demands that the equitable relief of injunction be made to require a party to do or refrain from doing particular thing pending the determination of the case before that Court. (lawpavilionpersonal.com)

obligation; duty. Broadly speaking, the words are synonymous in referring to what a person is required to do or refrain from doing—or for the performance or nonperformance of which the person is responsible. But there are connotative nuances. An obligation is normally an immediate requirement with a specific reference .

A duty may involve legal compulsion and immediacy, but the word carries an overlay of a moral or ethical imperative . More specifically, duty = (1) that which one is required to do or refrain from doing, esp. as occupant of some position, role, or office; or (2) any one of a complex of rights and standards of care imposed by a legal relationship. Sense 2 appears primarily in tort law, in which writers use duty only to mean that there could be liability. (Garner’s Dictionary of Legal Usage)