A measure of the extent to which a given entity is directly or indirectly related to other entities, or isolated from them. A measure of the degree of interconnectedness or density of a group of entities. This may be an indication of the degree of development of a group of entities. A measure of the number of other entities to which a particular entity is directly related. The nature or reason for the existence of a relationship between entities.
Simple networks can have only one link between two entities.
More complex networks may have two or more such links, possibly each of different content. A measure of the period over which a certain relationship between entities is activated and used. A measure of the strength of the relationship between two entities. The frequency with which a link is established or cut off, if this is the case. A network is rearrangeable if alternative paths can be found to link any pair of entities by rearranging the links between other entities.