A country with a stable government, prosperous economy, and advanced technology and infrastructure; also called [[开发国家|開發國家|kai1 fa1 guo2 jia1]], [[先进国家|先進國家|xian1 jin4 guo2 jia1]], or [[发达国家|發達國家|fa1 da2 guo2 jia1]].

A country with a low level of economic development, typically characterized by low income, high birth rates, and an economy dependent on agriculture and few export products.