Squinches, which is a term for corbeling or arch construction used to support a roof, has several synonyms. One of the most commonly used terms is corbels, which are the elaborately carved, decorative brackets that project from a vertical surface. Other synonyms include pendentives, which are the triangular curved surfaces that form a transition between a dome and its supporting structures; squinch arches, which are the arches built diagonally across the corners of a space to support a dome; and trompes, which are the stone and plaster forms used to create the illusion of a vaulted ceiling. So, whether you're an architect or simply interested in the history of construction, knowing these terms can help you better understand the evolution of building and design.