(See also Introduction to Periodontal Disease.) Trench mouth is a painful infection of the gums, causing pain, fever, and sometimes fatigue. If the normal bacteria in the mouth overgrow, the gums can become infected. The gums hurt, and people sometimes have extremely bad breath.
The Elements of Art and Design: A continuous mark made on a surface by a moving point; it may be flat (pencil line) or three-dimensional (a rod, groove, ridge, etc.) Line may be explicit - a line painted along the edge of the road - or implied by the edge of a shape or form.
The predictability of the rhythm in art, or the tempo can also be achieved by how the elements are placed within the composition. If elements are placed in a predictable manner they form a pattern. This pattern resembles a musical movement or fluid and flowing appreciation of the artwork.