This is the 7146th most frequent Korean word.
조언한
"Advised" or "recommended."
In this sentence, '조언한' is used as the past tense modifier of the verb 'to advise', indicating that the person has given advice to a friend in the past.
그는 친구에게 조언한 적이 있다.
He has advised his friend before.
Here, '조언한' describes the advice that was given, functioning as a descriptor for the acts of giving advice or recommendations.
조언한 것들이 문제를 해결하는 데 도움이 되었다.
The advice given helped solve the problem.
In this context, '조언한' qualifies the content or points of advice that were conveyed previously.