Figure summarizes the results, displaying isosurfaces of ∆ρ pol (r) from FCO-MBD for select systems. Large, polarizable monomers exhibit significant vdW-induced charge displacements toward the intermonomer regions, much more pronounced than in smaller dimers like benzene. To quantify this, we compute the integral of charge displacement over charge-accumulating or depleting regions, defining Q vdW = Ω ∆ρ pol (r) d 3 r, where Ω is the region with ∆ρ pol (r) > 0. This measure, Q vdW , captures the total charge displaced due to vdW interactions and serves as a scalar measure of vdW polarization strength.