What is the difference between abortion and murder outside the womb?

What is the difference between abortion and murder outside the womb?

There is none ethically, morally and if we stand by natural law not made up laws which are themselves illegal under natural law, legally.
The difference is one of seen versus unseen. But even this is only true up to the fact. The aborted human is seen.
Even further, inside the womb a moving image of the child is seen.
The actual seen child is dead. 
You kill the child you have not yet physically seen and then you see the dead child.
Gruesome in the extreme, horrifying, but not sufficient to deter either one, neither the abortionist per se nor the human who has aborted both the child and her own motherhood.
The depravity of human nature is on show here.
The reality of human evil.
Evil is in the genes. There is no question but it still requires the will to accede to it or reject it otherwise there would be no possibility of salvation.
Salvation is a product of human will.
Even doing nothing must derive from the action of the will.

Getting back to the technical difference between the legal definitions of murder and abortion it is seen and unseen murder.
Making it unseen but still well and truly known somehow makes it alright in the eyes of both abortionists – the mother is the prime abortionist as she is the one who instigated the crime ie crime in the natural not made up sense.

So it is the sense of sight, the sense of touch perhaps and even the sense of hearing which stand between abortion and murder at least in the perpetrators mind.

That’s like stealing a million bucks via electronic means makes theft ok. It is exactly the same, or turning you back on an avoidable accident that you know is about to happen is ok.
Even the abortionists, one and two, would regard that as ridiculous but it is no different and therefore the abortion we must conclude is a deliberate act of murder using that same logic and their thinking or saying differently is pure lie and they should be prosecuted as murderers. There is no other explanation. Neither can there be any defence and the government which supports abortion is itself liable under natural law which is immutable, for murder.