Manslaughter in English law
In the English law of homicide, manslaughter is a less serious offence than murder, the differential being between levels of fault based on the mens rea (Latin for "guilty mind") or by reason of a partial defence. In England and Wales, a common practice is to prefer a charge of murder, with the judge or defence able to introduce manslaughter as an option (see alternative verdict).
Source: Wikipedia — Manslaughter in English law (CC BY-SA 4.0)