A mass killing is called a massacre, mass murder, or mass killing.
The amount of matter in an object is called mass.
The measure of an object's mass is called mass, and the measure of its velocity is called velocity.
The mass of an object in a gravitational field is called the object's "mass".The presence or absence of a gravitational field has no effect on the mass.
The amount of mass in a specific volume is called density. Density is calculated by dividing the mass of an object by its volume.
The rate of mass transfer is called mass flux or mass transfer rate. It represents the amount of mass moving through a unit area per unit time.
They were called Einsatgruppen (or SD-Einsatgruppen). In English they are often referred to as mobile killing units.
Mass killing was not allowed in Belgium and other Eastern Europe countries.
Holocaust
It is considered to be genocide as soon as mass killing becomes directed at a certain ethnic group.
A double homicide. In addition, if the two people were killed at the same time by the same person, it could be called a mass murder. If they were killed in separate incidents by the same person, it could be called a serial murder.
The term is genocide: deliberate & systematic mass killing of people
Babi Yar was a mass killing, the victims of Dachau died over a twelve year period.
Massacre is the mass killing of people.
George Harpton
Killing teacher is called 'Teachercide"
Filicide.
The Holocaust, where he was responsible for the killing of about 6 million Jews.