to appear, become distinct/clear/open/manifest, come out, ascend/mount, get the better of, know, distinguish, be obvious, go forth, enter the noon, neglect, have the upper hand over, wound on the back.
zahara - to help/back/support in the sense of collaboration.
zihar - was a practice of the pre-Islamic days of the Arabs by which the wife was kept in suspense, sometimes for the whole of her life having neither the position of a wife nor that of a divorced woman free to marry elsewhere. The word zihar is derived from zahr meaning back.