This is the 9737th most frequent Korean word.
고백을
"Confession."
In this sentence, '고백을' (confession) is the object of the verb '하기로 결심했어요' (decided to make/to have). This phrase denotes an internal decision to express one's feelings or thoughts to someone.
그는 그녀에게 고백을 하기로 결심했어요.
He decided to confess to her.
Here, '고백을' describes the act of confessing, metaphorically expressed through the music, emphasizing emotional transparency.
그녀의 노래는 마치 고백을 하는 듯한 느낌을 주었다.
Her song gave the feeling as if she were confessing.
'고백을' refers to the process or act of confessing, and its need to be conducted honestly is highlighted.