a group of independent but interrelated elements comprising a unified whole

communicate with and within a group

any fine network (especially one in the body composed of cells or blood vessels)

a network of spies

an exclusive informal network linking members of a social class or profession or organization in order to provide connections and information and favors (especially in business or politics)

a network of facilities and people who interact and remain in informal communication for mutual assistance; a network that enables you to live in a certain style