Citadel vs. Castle

Citadelnoun

A strong fortress that sits high above a city.

Castlenoun

A large building that is fortified and contains many defences; in previous ages often inhabited by a nobleman or king.

Citadelnoun

A stronghold or fortified place.

Castlenoun

(chess) An instance of castling.

Citadelnoun

An armoured portion of a warship, housing important equipment.

Castlenoun

A rook; a chess piece shaped like a castle tower.

Citadelnoun

A Salvation Army meeting place.

Castlenoun

(shogi) A defense structure in Japanese chess in which the king (玉) is positioned in a certain way so that it is protected by pawns (歩) and silver general(s) (銀) and/or gold general(s) (金) often with an additional knight (桂) and lance (香車).

Citadelnoun

A fortress in or near a fortified city, commanding the city and fortifications, and intended as a final point of defense.

Castlenoun

(obsolete) A close helmet.

Citadelnoun

a stronghold into which people could go for shelter during a battle

Castlenoun

(dated) Any strong, imposing, and stately mansion.

Citadel

A citadel is the core fortified area of a town or city. It may be a castle, fortress, or fortified center.

Castlenoun

(dated) A small tower, as on a ship, or an elephant's back.

Castleverb

(transitive) To house or keep in a castle.

Castleverb

To protect or separate in a similar way.

Castleverb

(obsolete) To make into a castle: to build in the form of a castle or add (real or imitation) battlements to an existing building.

Castleverb

To move the king 2 squares right or left and, in the same turn, the nearest rook to the far side of the king. The move now has special rules: the king cannot be in, go through, or end in check; the squares between the king and rook must be vacant; and neither piece may have been moved before castling.

Castleverb

To create a similar defensive position in Japanese chess through several moves.

Castleverb

(cricket) To bowl a batsman with a full-length ball or yorker such that the stumps are knocked over.

Castlenoun

A fortified residence, especially that of a prince or nobleman; a fortress.

‘The house of every one is to him castle and fortress, as well for his defense againts injury and violence, as for his repose.’; ‘Our castle's strengthWill laugh a siege to scorn.’;

Castlenoun

Any strong, imposing, and stately mansion.

Castlenoun

A small tower, as on a ship, or an elephant's back.

Castlenoun

A piece, made to represent a castle, used in the game of chess; a rook.

Castleverb

To move the castle to the square next to king, and then the king around the castle to the square next beyond it, for the purpose of covering the king.

Castlenoun

a large and stately mansion

Castlenoun

a large building formerly occupied by a ruler and fortified against attack

Castlenoun

(chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard

Castlenoun

interchanging the positions of the king and a rook

Castleverb

move the king two squares toward a rook and in the same move the rook to the square next past the king

Castle

A castle is a type of fortified structure built during the Middle Ages predominantly by the nobility or royalty and by military orders. Scholars debate the scope of the word castle, but usually consider it to be the private fortified residence of a lord or noble.