element(A unit of information within a markup language that is defined by a tag, or a pair of tags surrounding some content, and includes any attributes defined within the initial tag); item(A unit of data or metadata that is being synchronized. A typical item of data might be a file or record, whereas a typical item of metadata might be a knowledge item)
cell energy, The basic building block of a battery. It is an electrochemical device consisting of an anode and a cathode in a common electrolyte kept apart with a separator. This assembly may be used in its own container as a single cell battery or be combined and interconnected with other cells in a container to form a multicelled battery(energija)