I learned an unfamiliar word "homicide" and other related words.
"homicide" includes "murder" and "manslaughter", the word has broad meaning.
"murder" is used generally, means to murder intentionally.
"manslaughter" means to kill a person unintentionally. In addition, manslaughter is divided into "voluntary manslaughter" and "involuntary manslaughter". In the case of voluntary manslaughter, the defendant didn't want to kill someone but wanted to threaten or hurt them. Whereas in involuntary manslaughter, the defendant didn't intend to kill, threaten, or hurt anyone. It's completely unintentional.
Moreover, there is a phrase "attempted murder". The word refers to the case where a person wanted to kill someone but failed to kill them. (victim survived)
The way to divide of murder is slightly different from the way in Japan, so it's complicated.
Actually, when I saw the word "voluntary manslaughter", I guessed it meant the person is pleased to kill others, like a serial killer". There was a huge difference.
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