で

particle

at: indicating a location at which something happens / with, by, using: indicating the means by or with which something happens

私は毎日電車で通勤します。

I commute by train every day.

意味（1）

at: indicating a location at which something happens

ここで休(やす)みたい。

意味（2）

with, by, using: indicating the means by or with which something happens

筆(ふで)ペンで書(か)く

fudepen de kakuto write with a brush pen