Communism in Korea means that the government owns everything and shares it equally with everyone. That means everyone gets the same amount of things, no matter how much work they do.
In North Korea, the government is communist and has been since the country was created in 1948. This means that the government owns everything and lets everyone have what they need. The government runs everything, like factories and schools, so everyone works for the government.
In South Korea, the government is not communist. It is a democracy, which means that people get to vote for their leaders and have more freedom to make their own choices. South Korea has a market economy, which means that people can own their own businesses and make money by selling things.
Communism was introduced to Korea by the Soviet Union after World War II. They wanted to spread their idea of communism to other countries, and Korea was one of them. The Soviet Union helped North Korea become a communist country, while South Korea became a democratic country with the help of the United States.
Today, North Korea is still a communist country and has strict rules about what people can do and say. South Korea is now one of the most prosperous countries in the world, with a strong economy and freedom for its citizens.