But sometimes it can be counted as murder even if it was unintentional if you were doing something so reckless and stupid you should have realized it
Just depends on the state. So you have to look at the definitions. State A might have Murder and Manslaughter, State B might have Murder and Negligent Homicide and State C might have Murder-I and Murder-II or first and second degree.
I've seen a bunch where charges will come out of Texas for Assault and people freak out thinking it's being played down despite Texas Assault being the same as Battery in their state. Or Aggravated Assault being the same as Attempted Murder in their state.