In the process of combination the higher degrees transform the lower ones. That which has qualities and modes is a substance. One instant is the time taken by a slow moving elementary particle of matter to move from one space point to the adjacent space point. The condition of a substance is a mode. Existence is the characteristic of an entity.
Permanence implies indestructibility of intrinsic attributes.
An entity possesses attributes as well as modifications. Entities Of The Universe. Inanimate entities include. Medium of motion. Medium of rest.