Some important economic terms from World Bank:

High-performing Asian Economies (HPAEs), led by Japan which has a very rapid export growth.
The Four Tigers: Hong Kong, Republic of Korea, Singapore, and Taiwan, China.
Newly Industrializing Economies (NIEs): Indonesia, Malaysia, and Thailand.
East Asia: Low and middle income economies of East and SEA and the Pacific, east of and including China and Thailand.
South Asia: Bangladesh, Bhutan, India, Myanmar, Nepal, and Sri Lanka.
Sub-Saharan Africa: all south of Sahara include South Africa but excluding Mauritius, Reunion, and Seychelles, which are in the other asia and Islands group.
Europe, Middle East, and North Africa include middle income European economies of Bulgaria, the former of Czechoslovakia, Greece, Hungary, Poland, Portugal, Romania, Turkey, and the former Yugoslavia, and all economies of North Africa and the Middle East and Afghanistan.
Latin America and the Caribbean comprises all American and Caribbean economies south of the US.