castle vs castling

castle

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

  • An instance of castling. 

  • The wicket. 

  • A defense structure in shogi formed by defensive pieces surrounding the king. 

  • A large residential building or compound that is fortified and contains many defences; in previous ages often inhabited by a nobleman or king. Also, a house or mansion with some of the architectural features of medieval castles. 

verb
  • To house or keep in a castle. 

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

  • To protect or separate in a similar way. 

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

  • 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. 

castling

noun
  • A move in which the king moves two squares towards a rook, and the rook moves to the other side of the king; the action of the verb to castle. 

  • One that is cast. 

  • A miniature cast or mould. 

  • The act of constructing 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). 

How often have the words castle and castling occurred in a corpus of books? (source: Google Ngram Viewer )