Г376
стирать/стереть грани (грань) между кем, между чем
VPsubj:
usu. abstrfixed WO to make it so that the differences distinguishing, separating two or more groups or phenomena disappear
x стёр грани между Y-ом и Z-ом - x obliterated (erased, eliminated) the distinctions (the differences, the boundaries, boundary lines) between Y and z
x broke down the boundaries between Y and z.