living arrangement(n = noun.cognition) - an arrangement to allow people (or ideas) to coexist;
is a kind of arrangement, organisation, organization, system

arrangement, cost of living, flower arrangement, free living, gracious living, living, living accommodations, living being, living dead, living death, living granite, living picture, living quarters, living rock, living room, living space, living stone, living substance, living thing, living trust, living wage, living will, musical arrangement, spatial arrangement, standard of living, temporal arrangement