appertinence

Noun

appurtenance (plural appurtenances)

1. That which appertains to something else; a belonging, accompaniment, adjunct, appendage, attribute, or accessory ; an addition.
   • Indeed, that was as it should be; for she was only an appurtenance of my mattress, or self-acting bedstead on four castors.1879, Robert Louis Stevenson, “[Velay.] .”, in Travels with a Donkey in the Cévennes, 1st American edition, Boston, Mass.: Roberts Brothers, →OCLC, page 17
2. (in plural) Equipment used for some specific task; gear.
   • Araminta, come I'll talk ſeriouſly to you now, could you but ſee vvith my Eyes the buffoonry of one Scene of Addreſs, a Lover, ſet out with all his Equipage and Appurtenances; […]1693, Will[iam] Congreve, The Old Batchelour, a Comedy. […], London: […] Peter Buck, […], →OCLC, Act II, scene [ii], page 14
3. A subordinate interest in land which benefits a principal estate, which cannot be detached from or held separately to that estate; an appurtenant interest.
   • It is well settled that a water right may pass with land as an appurtenance thereto, or as a parcel thereof.1908, Samuel Charles Wiel, Water Rights in the Western States, page 340

   Synonyms:

   contenement

4. A modifier that is appended or prepended to another word to coin a new word that expresses belonging.
5. The state or quality of being an appurtenance.
   • Thus, these two characteristics — appurtenance and the lack of need for any act of acquisition - go together and depend upon each other; one is merely looking at different facets of the same thing.1970, United States. Congress. Senate. Interior and Insular Affairs, Outer Continental Shelf, page 275