An architectural arch is a curved structure that is used to support a building or other structure. The term 'architectural arch' can refer to four different types of arches: OGEE (4 letters), OGIVE (5 letters), ogees (5 letters), GOTHIC (6 letters), and ionic (5 letters). An OGEE arch is an S-shaped arch with a pointed top, while an OGIVE arch is a pointed arch with a curved top. Ogees are two OGEE arches placed side by side. GOTHIC arches are pointed arches with a pointed top, and ionic arches are semi-circular arches with a curved top. All of these arches are commonly used in architecture to provide structural support and aesthetic appeal.