This is the 4785th most frequent Japanese word.
死角
"死角" means "blind spot."
The term '死角' here refers to 'blind spots' in the context of driving and vehicle safety.
車間距離が狭い状況では、死角を注意する必要があります。
In situations where the distance between cars is narrow, it is necessary to pay attention to blind spots.
In this sentence, '死角' means areas that are outside the view of surveillance cameras, emphasizing unseen or neglected zones.
監視カメラが設置されていない場所が死角になっています。
The places without surveillance cameras have become blind spots.
Here, '死角' describes an area where the enemy is vulnerable or unable to defend, used metaphorically in terms of strategy.