Okay now I'll begin to explain in my own words the best I can starting with Abuse.
Abuse is when a person has harm inflicted upon themself by any means. for example when a very sad and lonely person gets extremely drunk to "dull" the pain of a loss or when a kid who got a bunch of pain killers from the dentist pops the whole bottle to loosen up to have some fun etc. There is a cause for everything so until the cause is no longer there then the abuse will continue in other forms if the prior one is not available.
Animal Abuse. Estimated 17,403 cases are brought to the court in the U.S. every year, imagine all the ones that aren't known...
The continuation of abuse can lead to addiction when the body realizes it use to have a bunch of a certain chemical in itself and no longer has it so it tricks the mind into thinking it needs it or the other way around when the addictions comes first and makes the user abuse it.
Addictions help you... make stupid decisions.
Remember Thomas the little train that could? " i think i can i think i can" well your brain is a very powerful thing. If it thinks it needs it, your body will need it. It's that simple, until the addiction is weened and the cause for abuse is gone. Addiction can mentally and physically hurt a person and their loved ones for obvious reasons. I'm a strong believer in if a person does not want help destroying their addiction then truly they may never become clean and independent of the need for the substance.
Because of Abuse this Child is Scarred for Life.
Now the dependency on a substance is not to be confused with the dependency on an object or activity which is more mental then physical. Obsessions start in the brain as well but more thought is involved. Obsessions start with an idea and then the person becomes afixiated on the idea or feeling associated with something. Like a person who's obsessed with shopping because it brings them the feeling of happiness or wealth etc which are triggered by chemicals in the brain. All of these things are related to one another and can be experience at the same time or separately. I'll try to demonstrate this below.
abuse --> abuse + addiction
obsession --> obsession + addiction or --> Obsession + addiction + abuse
addiction --> addiction + abuse
as you can see abuse is the worst scenario and obsession can trigger addiction followed by abuse.
The body is a fragile thing and should be respected as well as the meaning of words otherwise you might become very confused and end up abusing the image of our society by showing others the inability of our nation to use our own language correctly.