👉 Unconcretely, also known as a "void," refers to an object or substance that is not present in reality but exists within it. In other words, it is a state of being without any physical existence. In physics and engineering, unconcretely can refer to the absence of a material, space, or energy in a system. It's often used in scenarios where there is no real object or substance involved, such as in the construction of a void or an abstract concept like "