also: キー・ポイント
key point; the key
Refers to the most important or crucial element in a discussion, plan, or situation.
成功のキーポイントはチームワークだ。
The key point for success is teamwork.
この問題のキーポイントをまとめてください。
Please summarize the key points of this issue.
You should firmly grasp the key point of the negotiation.
The key factor deciding the outcome of this match is concentration in the first half.
I found the key point for solving the problem.