|Align The faces of objects that are in line with each other, or when their center-lines lie on the same axis.
Awning window A window hinged along the top edge.
Axis (pl. axes) The centerline of openings or objects that align in a row along an imaginary line.
Baseboard Finish trim where floor and walls meet.
Bell-cast eaves A roof which curves, sloping more gently toward the bottom.
Belt-course A horizontal band similar to but thicker than a string course, marking subdivisions of a building.
Board and batten Vertical siding where wood strips (Battens) hide the seams where other boards are joined.
Bond Refers to the pattern formed by mortar joints between bricks, blocks or stones.
Buttress A thickening of a wall, at right angles to it, for added strength.
Capital The elaboration at the top of a column, pillar, pier or pilaster.
Casement window Windows that open in the manner of a door.
Casing The trim around a window or door.
Centerline The imaginary line down the center of a thing.
Circulation That part of a room or building required for movement of people from place to place.
Chamfer A beveled edge.
Cladding A term used to describe the siding or materials covering the exterior of a building.
Clapboard Tapered horizontal boards used as siding, thickest on their bottom edge; each overlaps the one below.
Cornice The uppermost suite of moldings along the top of a wall, any molded projection of similar form.
Course A continuous row of building material, such as shingle, brick or stone.
Crown molding Moldings where walls and ceiling meet; uppermost molding along furniture or cabinetry
Doric The simplest of the three classical orders of Greek architecture.
Dormer A window which projects from a sloping roof.
Double-hung window Windows which operate by means of two sashes that slide vertically past each other.
Dutch door A door divided horizontally in half; the haves may be opened together or individually.
Eyebrow window Small, horizontally rectangular windows often located on the uppermost story, aligned with windows below.
Facade One of the exterior faces (walls) of a building.
Fan-light A semi-circular or semi-elliptical window having the sill horizontal.
Fascia A horizontal band or board, often used to conceal the ends of rafters; the front of an object.
Fenestration The disposition of windows in a building; their arrangement.
Finial A knob-like ornament.
Fish scale shingles Shingles having straight sides and rounded bottoms.
Frame Of wood construction.
Gable A triangular area of an exterior wall formed by two sloping roofs.
Gambrel A roof where each side has two slopes; a steeper lower slope and a flatter upper one; a 'barn roof'.
Half-timber A framed construction method where spaces between members are filled with masonry.
| Hipped roof A roof which slopes to the eaves on all sides, a roof without gables.
Jamb The vertical members of a window or door frame.
Jenkins-head roof A gabled roof with its apex truncated by a small hipped roof.
Joist A beam supporting a floor or ceiling.
Lattice A grille created by criss-crossing or decoratively interlacing strips of material.
Lintel A horizontal member spanning an opening.
Millwork Finished woodwork, cabinetry, carving, etceteras.
Newel The end post of a stair railing.
Palladian A motif having three openings, the center one being arched and larger than the other two.
Parquet floor Wood flooring laid to form geometric patterns.
Partition The name given to an interior wall.
Pediment A low triangular gable above a cornice, topped by raking cornices and ornamented.
Pendant A bulbous, knob-like ornament which hangs downward.
Pent roof A small roof protruding from a facade, separating stories.
Pilaster A rectangular vertical member projecting only slightly from a wall, with a base and capital as with a column.
Pier A vertical, non-circular masonry support, more massive than a column.
Pillar Similar to but more slender than a pier, also non-circular.
Pitch The rate at which a roof or other surface slopes.
Pocket door Doors which slide open into cavities within walls, seeming to disappear when open.
Portico A roof, generally gabled, supported on columns, usually more elaborate than a porch.
Quoins Stones or blocks reinforcing or accenting the corners of a building.
Rafter A sloping beam which supports a roof.
Raking cornice The sloping moldings of a pediment.
Ridge board A decorative board standing on edge, along the ridge of a roof.
Riser The vertical portion of a step.
Rubble Masonry construction using stones of irregular shape and size.
Rusticated stone Stonework, sometimes roughly finished, distinguished by having the joints deeply sunk.
Sash An individual frame around a window.
Sheathing A covering over the structural frame of a building, onto which the cladding is attached.
Soffit The underside of a member such as a beam or arch, or of an eave, overhang. A dropped ceiling, etceteras.
String-course Similar to a belt-course but thinner, a horizontal band or molding marking architectural subdivisions, such as stories.
Stucco Plaster or cement used as a coating for walls.
Stud A vertical wood support in a frame wall.
Surround(s) The molding which outlines an object or opening.
Symmetry When two halves of a thing are as mirror images of each other.
Tread The horizontal portion of a step, usually with a rounded edge , or 'nosing' which overhangs the riser.
Trellis A system of horizontal joists supported on posts, designed to support growing plants.
Veneer A thin facing of finishing material
Wainscot A paneling applied to the lower portion of a wall.