There are ten commandments and the only one folks argue about is Thou Shalt Not Kill. Proponents of killing insist God means "Murder" not kill. Though the result is the same. Isn't it?

Of course it's the same.

Parts of the Bible have been through several translations since their origin. Exact words may or may not exist that match the intent communicated at the time. I suggest you read the Book of Exodus, which contains the Ten Commandments starting at Exodus 20:1. Shortly theareafter, the same Book of Exodus prescribes the death penalty for an offenses as light as breaking the sabbath or cursing one's mother and father. 

Exodus clearly states there is killing that is justified and killing that is not justified; there is some kind of difference.

Thank you for your reply NDT and Happy Friday to thee! :)