Barley Twist refers to a Decorative Motif and style of turning or twisting resembling the spiral of a barley sugar candy, applied primarily to wood or metal in furniture and architectural elements.
Intarsia is a form of Wood Inlay (a type of Inlay) that involves fitting together pieces of wood of varying shapes, colors, and species to create intricate patterns or images.
Mortise & Tenon is a type of Joinery that involves fitting a projection (tenon) into a corresponding cavity (mortise) to create a stable, interlocking connection.
A quatrefoil is a Decorative Motif and decorative element consisting of a symmetrical shape which forms the overall outline of four partially overlapping circles of the same diameter.