Murder verse Suicide

When you think about murder you always think about people killing other people. The one queston i was wondering about was the fact were suicide is basically murdering yourself. yes there is a difference in suicide because its your choice to die. Murder you don't really have a choice unless you are the murderer. In class we discussed right and wrongs in murder and i believe there a few ways where murder is ok. Yet most of the time i will admit it is wrong.