This is the 12740th most frequent Korean word.
대한항공
Korean Air.
Here, '대한항공' is used as the subject of the sentence to denote the airline company itself.
대한항공은 한국의 대표적인 항공사입니다.
Korean Air is a representative airline of Korea.
In this sentence, '대한항공' is used as part of the object concerning the flight service provided by the airline.
저는 대한항공 비행기를 타고 서울에 갔어요.
I took a Korean Air flight to Seoul.
Here, '대한항공' serves as the subject, referring to the entity that performs the action of announcing.