expository: Intended to explain or describe something
composition: The nature of something's ingredients or constituents; the way in which a whole or mixture is made up.
assuage: Make (an unpleasant feeling) less intense: "the letter assuaged the fears of most members".
decadence: Moral or cultural decline, esp. after a peak of achievement
hackneyed: Lacking significance through having been overused
coalition: An alliance for combined action, especially a temporary alliance of political parties forming a government or of states.
transcend: Be or go beyond the range or limits of (something abstract, typically a conceptual field or division).
meritorious: Deserving reward or praise: "a medal for meritorious conduct".
lurid: Very vivid in color, esp. so as to create an unpleasantly harsh or unnatural effect: "lurid food colorings".
petulant: (of a person or their manner) Childishly sulky or bad-tempered