It's almost considered too blunt to say that someone died. Instead, we might say that they passed away, or that they passed on, or that they lost or gave their lives. Some might argue that the difference between those wordings is slight, incidental, even meaningless. After all, in cold facts the end result is the same. Yet those words are different, they mean different things, and we use one or the other to convey different meanings - this is especially true of the last two examples. The difference between losing a life and giving a life may be subtle, and yet it makes such a difference in how the person and the event is perceived. One makes the death a tragedy. The other makes it heroic, because it expresses that there was a choice involved, it gives the individual agency.