Civilian casualties

Okay, so imagine you're playing with blocks, and you accidentally knock down a tower someone else built. That tower was like a house or a building where people lived or worked. Sometimes, when countries go to war, they also accidentally break things and hurt people who aren't in the war. These people are called civilians, which means they're just regular people who weren't fighting in the war.

When someone talks about civilian casualties, they mean the number of regular people who got hurt or killed during a war or battle. This is a really sad thing because those people didn't choose to be a part of the war, but they still got hurt or even died. Sometimes, countries try to avoid hurting civilians as much as possible while they fight, but it's not always possible to avoid.