Assertion: groin vault | /r/MadeOf | the intersection of two arches
Facets:
Source sentences:
text: To fulfill these functions, Romanesque churches evolved the extensive use of a semicircular (“Roman”) arch for windows, doors, and arcades; a barrel vault (i.e., arches forming a half-cylindrical vault over a rectangular space) or groin vaults (formed by the intersection of two arches) to support the roof of the nave; and massive piers and walls (with few windows) to contain the extremely forceful outward thrust of the arched vaults.