system

How to sign: an organized structure for arranging or classifying
"he changed the arrangement of the topics"; "the facts were familiar but it was in the organization of them that he was original"; "he tried to understand their system of classification";

Similiar / Same: organisation, organization, arrangement

Categories: structure

Within this category: calendar, classification system, contrivance, coordinate system, data structure, design, distribution, genetic map, lattice, living arrangement

system

How to sign: a group of independent but interrelated elements comprising a unified whole
"a vast system of production and distribution and consumption keep the country going";

Similiar / Same: scheme

Categories: group, grouping

Within this category: body, dragnet, economy, ecosystem, judiciary, language system, machinery, network, nonlinear system, organism, rootage, shebang, social organization, solar system, subsystem, syntax, water system