Hebrew work is helpful.
My foreign languages are Greek and German, with only a smattering of others. I find your list of words describing unity very helpful, certainly showing a basis for the inferences of the early Church. While I think we need to avoid etymologizing on the one hand, on the other it's important to reason in accordance with the analogy of Scripture, so statistical examinations of Scriptural usage have in my opinion great weight. One God comprised of three persons.