S: (n) system (system%1:14:00::), scheme (scheme%1:14:00::) (a group of independent but interrelated elements comprising a unified whole) "a vast system of production and distribution and consumption keep the country going"
S: (n) schema (schema%1:09:01::), scheme (scheme%1:09:01::) (an internal representation of the world; an organization of concepts and actions that can be revised by new information about the world)