In law, murder is the crime of a human being causing the death of another human being, without lawful excuse, and with intent to kill or with an intent to cause grievous bodily harm. ... Collective nouns (also known as terms of venery or nouns of assemblage) in English are subject-specific words used to define a grouping of people, animals, objects or concepts. ... Homicide is the killing of another human being by one or more others. ...
First Degree Murder: Murder involving special circumstances, such as murder of a police officer, judge, fireman or witness to a crime, multiple murder, the use of torture or especially heinous means, or means requiring great preparation, such as poison or lying in wait.
Murder rates of Japan and Iceland are among the lowest in the world, around 0.5; rate of United States is highest among all developed countries, at 5.5 (2004, [9]).
Murder demographics are affected by increasing medical technology: victims that might once have died are now able to be saved, leading to a lower murder rate but not affecting the overall rate of violent assault.