Adoption is when the biological parent chooses to give the child to different parents to raise. Traditionally, it would be the mothers decision based on her not being ready to be a parent and usually when the child is an infant.
Adoption Through Foster Care
Children who are adopted through foster care only become available after the parents rights have been terminated.
Forced Adoption is when the mother is tricked into sighing her rights away. For example, if she is on pain meds after giving birth.