Русско-англо-русский юридический словарь

A treaty is an agreement under international law entered into by actors in international law, namely sovereign states and international organizations. A treaty may also be known as an (international) agreement, protocol, covenant, convention, pact, or exchange of letters, among other terms. Regardless of terminology, all of these forms of agreements are, under international law, equally considered treaties and the rules are the same. (Wikipedia)

Understanding legal terminology is vital for understanding the law itself and properly applying it in research, legal analysis, document preparation and compliance with local, state and federal judicial systems. (becomeaparalegal.org)

In legal terminology, a complaint is any formal legal document that sets out the facts and legal reasons (see: cause of action) that the filing party or parties (the plaintiff(s)) believes are sufficient to support a claim against the party or parties against whom the claim is brought (the defendant(s)) that entitles the plaintiff(s) to a remedy (either money damages or injunctive relief). For example, the Federal Rules of Civil Procedure (FRCP) that govern civil litigation in United States courts provide that a civil action is commenced with the filing or service of a pleading called a complaint. Civil court rules in states that have incorporated the Federal Rules of Civil Procedure use the same term for the same pleading. (Wikipedia)

"Easement” is a common law term; “servitude” is a civil law term. Because Shreveport and Bossier are near to Texas and Arkansas, many of the professionals who work in our area have relocated here from these other states and have their professional roots in the common law. So it is not unusual, for example, for surveyors and civil engineers to prepare plats of survey using common law terminology like “easement”. Lawyers (like me) who are trained in the civilian method prefer to keep our terminology straight and use the proper term: servitude. But sometimes we just have to work around things. However, generally speaking, an easement and a servitude perform the same function. Each of them create a right against a parcel of property that can be asserted by another person who is not the owner of the parcel. (First Commerce Title)