This is the 245th most frequent Korean word.
원내대표는
"원내대표는" means "floor leader" (the leader of a political party within a legislative assembly).
Here, '원내대표는' is used to indicate the subject of the sentence, referencing the parliamentary role of the floor leader making an announcement.
원내대표는 당의 향후 계획을 발표했습니다.
The floor leader announced the party's future plans.
In this case, '원내대표는' signifies the person in the parliamentary position responsible for leading a formal discussion.
원내대표는 당원들과의 열린 대화를 주재했습니다.
The floor leader chaired an open discussion with party members.
In this sentence, '원내대표는' refers to the floor leader of the parliamentary body who is taking an action - convening a meeting.