This illustrates geometrically the equivalence between the quadrature of the parabola and the volume of a pyramid, which were computed classically by different means.
Even when two different moods exist in the same language, their respective usages may blur, or may be defined by syntactic rather than semantic criteria.
The juvenile appearance of the brown thrasher from the adult is not remarkably different, except for plumage texture, indiscreet upper part markings, and the irises having an olive color.