What are the two most common types of hinge installation?

The two most common types of hinge installation are mortise hinges and surface-mounted hinges. Mortise hinges are installed by cutting a recess into the door and the frame, allowing the hinge to sit flush, providing a cleaner look and better alignment. Surface-mounted hinges, on the other hand, are attached directly to the surface of the door and frame, making them easier to install but often more visible. Each type has its specific applications based on design preferences and functional requirements.