Русско-англо-русский юридический словарь

A servitude is a qualified beneficial interest severed or fragmented from the ownership of an inferior property (servient estate) and attached to a superior property (dominant estate) or to some person (personal beneficiary) other than the owner.[1] At civil law, ownership (dominium) is the only full real right whereas a servitude is a subordinate real right on par with wayleaves, real burdens (i.e. real covenants), security interests, and reservations. (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)