This is the 781st most frequent Korean word.
대전
"대전" can mean "Daejeon" (a city in South Korea) or "great war/battle," depending on context.
In this sentence, '대전' refers to the proper noun, the city of Daejeon in South Korea.
대전은 한국의 중앙에 위치한 도시입니다.
Daejeon is a city located in the center of South Korea.
In this case, '대전' means 'world war,' indicating a major global conflict.
역사 책에서 제2차 세계 대전에 대해 배웠어요.
I learned about World War II in the history book.
Here, '대전' is also used as a proper noun to indicate the city where the event took place.