This is the 3650th most frequent Korean word.
부정부패에
"Corruption and irregularities."
In this sentence, '부정부패에' indicates the topic of discussion ('about corruption') and sets the focus of the action described as requiring more attention.
부정부패에 대해서 더 많은 관심이 필요합니다.
More attention is needed regarding corruption.
Here, '부정부패에' shows the target of opposition ('against' corruption), identifying the main point of the action people are taking.
부정부패에 대항하여 많은 사람들이 노력하고 있습니다.
Against corruption, many people are making efforts.
In this sentence, '부정부패에' indicates associated involvement ('in corruption'), referring to the people subject to legal consequences.