Turtle shells and hawksbill shells differ primarily in the animals they refer to and the characteristics of the shells:
Turtles are a type of reptiles that live in the ocean. Their shells are usually flat and smooth. In order to reduce hydrodynamic forces, they are adapted to swimming in the water. Turtle shells usually have a more streamlined shape. Their shells usually consist of fused bony fragments and horny plates.
The hawksbill turtle is a type of sea turtle, mainly found in tropical and subtropical seas. It has certain lines and spots on its shell. Tortoiseshell shells often display complex markings and colors and are often used to create precious crafts and ornaments.
In general, turtle shell generally refers to the shells of sea turtles that live in the ocean, while hawksbill usually refers to turtles that have distinctive markings and are hunted for them. The two differ in the characteristics and uses of their shells.