While studying for the JLPT, I ran into the phrase "見事な活躍をする". I have always assumed that 活躍 means to use effectively or to one's advantage as in
日本語を仕事に活躍したい
But when I looked up 活躍 in a dictionary, I found out that it means active (which I think I understand); apparently it also means success when paired with other words (I saw many examples on Weblio), so 見事な活躍 means a brilliant success. I would love to understand how this is different from 成功 and how you can use 活躍 in this kind of situation.