Four corners (e.g., the four corners of a table or box).
テーブルの四つ角には保護カバーを付けた。
I put protective covers on the four corners of the table.
箱の四つ角がへこんでいたので中身が心配だ。
The box's four corners were dented, so I'm worried about the contents.
ラグは四つ角を合わせて丸めて保管する。
Roll up the rug by bringing together its four corners for storage.
A crossroads or street corner; an intersection where streets meet.
駅前の四つ角で待ち合わせしよう。
Let's meet at the street corner in front of the station.
信号のある四つ角を左に曲がってください。
Turn left at the traffic-light-controlled intersection.
あの四つ角は夜になると人通りが少ない。
That street corner has few pedestrians at night.