noun: network; plural noun: networks

​1. an arrangement of intersecting horizontal and vertical lines.

web, criss-cross, grid, lattice, net, matrix, mesh, webbing, tracery,trellis; 

webwork, meshwork, latticework, openwork, filigree, fretwork;

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2. a group or system of interconnected people or things.

system, complex, interconnected system/structure, complex system/arrangement, nexus, web; 

neural net; informal grapevine

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3. interact with others to exchange information and develop professional or social contacts.

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