1) Delicate gradations 2) Easy things to overlook 3) Fine distinctions 4) Fine, subtle differences 5) Shades 6) Shades of difference 7) Shades of meaning 8) Soupcons of suggestion 9) Subtle differences 10) Subtle distinctions 11) Subtle variations 12) Subtleties 13) Subtleties of meaning 1) Discrimination 2) Shades 3) Shadings 4) Tinges