EUTHANASIA
Euthanasia is the deliberate killing of someone by action or omission, with or without that person's consent, for what are claimed to be compassionate reasons.
ASSISTED SUICIDE
Assisted Suicide is counselling, abetting, or an act of aiding someone to kill himself or herself. This is sometimes referred to as physician-assisted suicide. For instance, instead of the doctor putting lethal poison in your mouth, he hands you a pill and you do it.