Acidity:  Contrary to popular belief, acidity in coffee does not necessarily refer to its PH levels.  Acidity is the dry and bright taste that coffee drinkers experience.

Body:  This refers to the weight of coffee, that is, to the permanence or density of coffee on your tongue as a result of its fat content.  A medium to dark brown coffee will generally have heavier body.

Aroma / Flavor:  The smell is the part of the flavor of coffee perceived by senses other than the tongue.