South Korea is a country.
This article includes a list of countries by their forecasted estimated gross domestic product ( PPP ) . List of countries by intentional homicide rate per year per 100,000 inhabitants . South Korea , officially the Republic of Korea ( ROK ; ) , is a sovereign state in East Asia , constituting the southern part of the Korean Peninsula . Globally , it ranks highly in personal safety , job security , ease of doing business and healthcare quality , with the world 's third highest health adjusted life expectancy and fourth most efficient healthcare system .