Rangtong and shentong
Rangtong and shentong are two distinctive views on emptiness (sunyata) and the two truths doctrine within Tibetan Buddhism. 'Rangtong' (Wylie: rang stong; "empty of self-nature") is a philosophical term in Tibetan Buddhism which is used by Tibetan defenders of shentong, like Dölpopa, to distinguish the majority Madhyamaka teaching on the nature of śūnyatā or "emptiness", namely that all phenomenon are empty of an enduring and/or unchanging essence or "self," and that this emptiness is not an absolute reality, but a mere nominal characterisation of phenomena.