Here's some words and what they mean in the coffee world. Acidity may be high, medium, light, low, or lacking altogether in coffees, in which case the coffee tastes flat or dull.
Acidity is characteristic of high-grown coffees.
A harsh, unpleasant taste detected on the back of the tongue. Found in over extracted brews as well as in over-roasted coffees and those with various taste defects. The tactile impression of weight and texture in the mouth. Coffees may be watery, thin, slight, light, medium, full, heavy, thick, or even syrupy in body, as well as buttery, oily, rich, smooth, chewy, etc., in texture. Easiest to detect in full-strength coffee.