This is the 113th most frequent Japanese word.
問題
"問題" means "problem" or "question."
Here, '問題' refers to a social or political 'issue' that is being debated or considered important.
現在、その政策について大きな問題が議論されています。
Currently, a significant issue regarding that policy is being discussed.
In this sentence, the word '問題' refers to a 'problem' or 'question' in an academic or intellectual context.
この問題はとても難しいです。
This problem is very difficult.
In this context, '問題' is used to mean 'issues' or 'points of concern' in a broader evaluative sense.