Samheiti: back up, backbone, backrest, backward, backwards, bet on, binding, book binding, cover, dorsum, endorse, gage, game, hind, hinder, indorse, plump for, plunk for, punt, rachis, rear, rearward, rearwards, second, spinal column, spine, stake, support, vertebral column
Andheiti: advance, ahead, forward, front, veer