This is the 8462nd most frequent Korean word.
δ북한
It seems there is a typo in the word "δ북한." If you meant "북한," it means "North Korea" in English.
The word '북한' here is used as a proper noun to refer to the country North Korea geographically.
북한은 한국의 북쪽에 위치한 나라입니다.
North Korea is a country located in the northern part of Korea.
In this sentence, '북한' specifies the political entity of North Korea for comparison purposes.
북한의 정치 체제는 한국과 상당히 다릅니다.
North Korea's political system is quite different from South Korea's.
Here, '북한' is paired with '남한' (South Korea) to contrast and specify the two nations of the Korean peninsula.