probation/parole

Your assignment is to distinguish the differences between probation and parole. When are these conditions implemented, and what are the criteria for receiving them? Is this a common type of sanction and do all states participate?  If not, what is used in lieu of these sanctions and how is it implemented?  What are some of the conditions that are imposed as part of probation or parole? These are just some of the questions that should be addressed in your paper.