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.
The term ‘Aryan’ means ‘noble’. It was used as a self designation by Indo-Iranian people. It was used in vedic period i India as an ethnic label for themselves as well as to refer noble class.
EXAMIANS