child rearing is the process of promoting and supporting the physical, emotional, social, and intellectual development of a child 
I agree.  What's your favorite part about child rearing?
Parenting refers to the intricacies of raising a child,biological or not
It certainly does and can be an enjoyable experience for all inolved!  Do you have any kids?
Have you raised a child before?
No I sure haven't.  I am an uncle to 3 children though.  Me and my nephew play basketball and go fishing a lot.
There are cases wheremany cases, orphaned or abandoned children receive parental care from non-parent blood relations. 
Yes adoption is a beautful thing.  I haven't really thought about adopting children at this stage in my life yet. 
Adoption is a process whereby a person assumes the parenting of another, usually a child, from that person's biological or legal parent or parents, and, in so doing, permanently transfers all rights and responsibilities
Yep.  that is indeed the definition of adoption.  Right on!  Have you adopted any children?