This is the 669th most frequent Chinese word.
担心
To worry.
Here, '担心' is used to express concern or worry about someone's specific situation.
我很担心你最近的健康状况。
I am very worried about your recent health condition.
Here, '担心' is used to assure someone not to be concerned about a problem as it has been managed.
请不要担心，我已经解决了那个问题。
Please don't worry, I have already resolved that issue.
In this sentence, '担心' conveys the ongoing concern parents have regarding their children's studies.