appurtenance

noun appurtenances · appertainance · appurtenaunce

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.
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; […]
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.

   Similar: 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.