The total extinction of the human species as a result of human action. Most commonly it refers to human extinction through nuclear warfare, but it can also refer to such extinction through other means such as global anthropogenic ecological catastrophe.
The systematic killing of substantial numbers of people on the basis of their ethnicity, religion, political beliefs, social status, or other particularities.
The systematic suppression of ideas on the basis of cultural or ethnic origin; culturicide.
The elimination of an entire class of monsters by the player.
To commit genocide (against); to eliminate (a group of people) completely.