When a wine's flavors, texture, and bouquet are integrated, so that no one element overpowers the others, the wine has balance. You can describe a wine that's not balanced with words like sour, flabby, sharp, or angular. In a general sense, bouquet describes the way a wine smells. But more specifically, bouquet describes the more subtle and integrated effect that fermentation and aging create out of a wine's original aromas.
Wines lacking complexity are simple, neutral, or hollow.
A wine that lacks depth can be described as flat, lean, or thin. A wine's finish is the impression of flavor you experience after you swallow. Finish is strongly affected by your sense of smell, triggered by the olfactory receptors near the back of your throat. When the first and most prominent flavors in a wine are simple fruits, and there's none of the complexity and range of flavors you find in a more complete or complex wine, you describe the way it tastes as forward fruit. The slow, beautiful dripping that occurs when wine is swirled in a glass and slides down the sides is described as legs.