What is child in Swahili?

Mtoto, for someone's child or children in general: mtoto wangu, my child, watoto wa shule, schoolchildren.
Mwana is also used of someone's child, and mwanagu, my child, is possibly more common than mtoto wangu. Plural: wanangu or watoto wangu. Mwanangu is often used in addressing a child: usifanye hivi, mwanangu, don't do that, my child, also used by a teacher speaking to young children or any older person chiding a young person.