The tennon should never be more than one-third of the width of its member. A barefaced tennon has only one shoulder, a stub tennon projects through the member into which it is morticed, while rather confusingly, a mortise which has not been cut all the way through a beam is a stump mortise. An oblique tennon is used when the two members to be joined do not meet at right angles.
Any joinery described as framed, uses mortices and tennons.
A bridle joint is formed where a tenon fits into a U-shape formed at the end of a member. Where the ends of members are simply reduced to half their width and bought together, a halving joint is formed.