Sill vs. Ledge — What's the Difference?

A horizontal member that bears the upright portion of a frame.

A horizontal projection forming a narrow shelf on a wall.

A windowsill.

A cut or projection forming a shelf on a cliff or rock wall.

(Geology) A sheet of igneous rock formed by the intrusion of magma between existing strata.

An underwater ridge or rock shelf.

A breast wall; window breast; horizontal brink which forms the base of a window.

A level of rock-bearing ore; a vein.

(construction) A threshold; horizontal structural member of a building near ground level on a foundation or pilings, or lying on the ground, and bearing the upright portion of a frame; a sill plate.

A shelf on which articles may be laid; also, that which resembles such a shelf in form or use, as a projecting ridge or part, or a molding or edge in joinery.

(geology) A stratum of rock, especially an intrusive layer of igneous rock lying parallel to surrounding strata.

(geology) A shelf, ridge, or reef, of rocks.

A threshold or brink across the bottom of a canal lock for the gates to shut against.

A layer or stratum.

(anatomy) A raised area at the base of the nasal aperture in the skull.

A lode; a limited mass of rock bearing valuable mineral.

The inner edge of the bottom of an embrasure.

(architecture) A (door or window) lintel.

(UK) A young herring.

(architecture) A cornice.

The shaft or thill of a carriage.

(shipbuilding) A piece of timber to support the deck, placed athwartship between beams.

Silly.

A provincial or territorial legislature building.

The basis or foundation of a thing; especially, a horizontal piece, as a timber, which forms the lower member of a frame, or supports a structure; as, the sills of a house, of a bridge, of a loom, and the like.

A provincial or territorial legislative assembly.

The shaft or thill of a carriage.

(uncommon) To cause to have, or to develop, a ledge (during mining, canal construction, building, etc).

A young herring.

A shelf on which articles may be laid; also, that which resembles such a shelf in form or use, as a projecting ridge or part, or a molding or edge in joinery.

Structural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure

A shelf, ridge, or reef, of rocks.

(geology) a flat (usually horizontal) mass of igneous rock between two layers of older sedimentary rock

A layer or stratum.

A lode; a limited mass of rock bearing valuable mineral.

A piece of timber to support the deck, placed athwartship between beams.

A projecting ridge on a mountain or submerged under water