as one of the surfaces of an object: has an important meaning, especially if we also realize the antithesis (top – bottom, front – back); see Antitheses or see individual sides of object.
as one of the lines: has an important meaning, especially if we also realize the antithesis – opposite side; see Antitheses.
as an area of something (river, path): has an important meaning, especially if we also realize the antithesis – opposite side; (see Left – see Right).
cardinal points: see individual cardinal points.
to set aside (in the sense of hiding, concealing): this image tells us how carefully hidden our desires and egotistical wishes are.