In the 6th century BCE the cultivable land was divided between the people. The beneficiaries were granted only the revenue of these lands and no administrative authority. There was emergence of the notion of private property, as there are references to the gift and sale of land.
Viharas were for the purpose of living, Chaityas were assemblies for the purpose of discussions. Further, Chaityas were with Stupas, Viharas did not have stupas.