This is the 751st most frequent Chinese word.
告
"告" means "to tell," "to inform," or "to announce."
Here, '告' means 'to accuse' or 'to bring to judicial accusation.'
他因为不当行为被告上了法庭。
He was taken to court for misconduct.
In this context, '告' is used to indicate 'to declare' or 'to make known an important announcement.'
张三向父母告了一个好消息。
Zhang San conveyed good news to his parents.
In this sentence, '告' is used in the sense of 'to tell' or 'to report information to someone.'