押さえ

押さえ

"押さえ" means "control," "restraint," or "hold down."

Here, 押さえながら means 'while focusing on' or 'holding down in relevance to an abstract concept'.

重要なポイントを押さえながら勉強しましょう。

Let's study while focusing on the important points.

Here, 押さえて means 'press firmly' or 'hold down' in relation to a physical object.

このボタンを押さえて、機械を動かしてください。

Hold down this button to operate the machine.

Here, 押さえ means 'to hold firmly or keep down physically'.

帽子が飛ばないように、手で押さえた。

I held my hat with my hand so it wouldn't fly away.