The nats are spirits worshipped in Myanmar in conjunction with Buddhism. They are divided between the 37 Great Nats and all the rest (i.e., spirits of trees, water, etc.). Almost all of the 37 Great Nats were human beings who met violent deaths (စိမ်းသေ, lit. “green death”). They may thus also be called nat sein (နတ်စိမ်း; lit. green spirits). The word ‘sein’, while meaning ‘green’, is being used to mean ‘raw’ in this context. There are however two types of nats in Burmese Buddhist belief.