To further define the concept, first the term network implies a set of individuals who are connected through social relationships, whether they be strong or weak. Terms such as community tend to denote a stronger form of relationship, but networks refer to all networks of social relationships, be they weak or strong. Second, the term practice represents the substrate that connects individuals in their networks. The principal ideas are that practice implies the actions of individuals and groups when conducting their work, e.g., the practice of software engineers, journalists, educators, etc., and that practice involves interaction among individuals.