Which legal concept indicates the ability to use something without changing its essence?

The legal concept you're looking for is rooted in the definition of "nonconsumable." This term refers to items or assets that can be used or enjoyed without being depleted or altered in their original state. For instance, a book or a piece of art can be read or admired without losing its physical substance or value.

In legal contexts, particularly in property law, nonconsumable goods allow individuals to utilize the item while still retaining ownership and the item's intrinsic qualities. This concept is crucial in understanding property rights and the responsibilities that come with possession.

In contrast, usufruct allows a person to use and benefit from an asset that is owned by another, but it typically involves certain obligations and restrictions, differing from the purely non-altering aspect of nonconsumable items. Encumbrance mainly relates to burdens or limitations on a property, such as liens or easements, which again does not align with the ability to use something without altering it. Dominance, while referring to an authoritative control or influence, does not pertain to the usage characteristics of an item in the legal sense.

Thus, understanding nonconsumable goods is essential for recognizing how certain items retain their value and essence despite being utilized.