Creation ex nihilo
It appears to me that creation ex nihilo employs 'nothing' in a certain narrow sense, as in being the non-existence of all things whose existence is material or physical. True nothingness, however, would be utter and absolute non-existence, not restricted to material or physical existence. The case in point being the existence of God. If God exists, then the existence of God is incompatible with absolute nothingness, because that would demand even the non-existence of God. If God exists, and if we are to be stringent in our use of nothing, then creation ex nihilo is untenable. It would simply translate as saying that God created universe out of a state of affairs in which there was no material/physical existence.