What is parenting
it refers to the intricacies of raising a child, there can be more than one child. the child also doesn't have to biological to be a parent. 
From what age can someone cease to be a child
It just depends on what state you are in but in most states it ranges from 16 to 18 years old. 
OK l will like to know more about a child
Children can be raised by all kinds of parents in all kinds of home settings. 
Home settings like
being adopted, foster care, or placed in an orphanage. they can also be from well off families.