Allegorical describes a story, painting, play, or film whose people and events stand for ideas, or teach a moral lesson, on a second level. Teachers say 'an allegorical novel'; art writers say 'an allegorical painting' — Justice as a woman with scales, a farm that stands for a country. It is an adjective: it names the kind of work, not the work itself. It does not mean 'symbolic' in the weak sense of one small sign; it usually means the whole piece is built as a double meaning. Though actually, people stretch it to any tale with a moral. More precise talk keeps it for a sustained hidden design. Fairly literary; you meet it in class more than in the street.