A rabbet is a recess cut out of the end or edge of a board. When a piece is butted into a rabbet, it is called a rabbet joint.
Corner dado and rabbet joint
Double corner rabbet joint
Double locked rabbet joint
Dovetail rabbet joint
Lock miter joint
Locked rabbet joint
Mitered rabbet joint
Rabbet joint
Stopped dado and rabbet joint
Stopped rabbet joint