In orthodontic terms, your Bite refers to the way your upper and lower teeth come together. In dental terminology, the Bite is also called the Occlusion. If your bite flawed, it is called a Malocclusion (Mal is the Latin prefix for “bad,” and Occlusion is the term for “bite;” so a Malocclusion literally means a “bad bite.”)
The word Occlusion itself refers to biting, so the Occulsial surface of your teeth refers to the biting surface.
There are several types of malocclusions, where the teeth do not meet properly. The most common are: cross bite, open bite, under bite, deep bite, crowding, spacing, and protrusion. These are each explained in their own separate Glossary entries.