node

The smallest unit of modular networking. For purposes of designing the human social network, the Node is City, of which there are several sizes.

A TinyCity is a node, and a Polis, which is made up of several TinyCities, is a module of nodes. Likewise, a Polis is also a node, and a Metropolis, which is made up of several Poli, is also a module of nodes.

Like a square and a rectangle, a module is also a node, but a node is not a module.

Self-sufficient human created organism of the network that can be joined together into exponentially (1/4 power)more efficient self-sufficient organism, called module.

Wikipedia Definition

In communication networks, a node (Latin nodus, ‘knot’) is either a redistribution point (e.g. data communications equipment), or a communication endpoint (e.g. data terminal equipment). The definition of a node depends on the network and protocol layer referred to. A physical network node is an active electronic device that is attached to a network, and is capable of creating, receiving, or transmitting information over a communications channel. A passive distribution point such as a distribution frame or patch panel is consequently not a node - wikipedia