Murder is defined as the unlawful and intentional killing of another human being by a person of sound mind, who has no legal reason to do so. The degree of blame therefore separate out charges of manslaughter and murder, with manslaughter having two degrees of blame, voluntary and involuntary
In a murder,the prosecution must prove that the accused had the intention to kill, and intention to inflict grievous and serious bodily harm, or had a reckless indifference to human life. The accused must have been able to foresee that their actions - or indeed a failure to act - would result in the death of the victim.
Voluntary manslaughter means the intentional killing that is found with mitigating factors. That is, a lack of premeditation, and the presence of provocation like rage, but other factors must apply. This may include someone who was in an argument, became enraged, and lashed out at the victim, killing them.
Involuntary manslaughter involves and unlawful killing without intent, for example in a car accident caused by reckless driving or committing an illegal or dangerous act. The prosecution must prove that the death was caused by an illegal act or omission. an act of neglect, or a departure from the standard of care any reasonable person could expect, not occurring would cause serious injury or death.
Hope this helps. Thank goodness I learnt how to touch type.