Manslaughter

The unlawful killing of a human being without premeditation.

Involuntary Manslaughter

Homicide in which there is no intention to kill or do grievous bodily harm, but that is committed with criminal negligence or during the commission of a crime not included within the felony-murder rule.

Voluntary manslaughter

An act of murder reduced to manslaughter because of extenuating circumstances such as adequate provocation (arousing the "heat of passion") or diminished capacity.