Empress (chess) and marshal are popular names for the rook+knight compound, although a case could be made for marshal, as the word is related to "mare" (female horse) and thus fits better for a piece that can move like a knight than chancellor, which has no connection to horses. Also, there are many commonly used chess pieces that, like chancellor, begin with "C" (e.g. the cannon in xiangqi, the camel in Tamerlane Chess, the champion in Omega Chess, and the cardinal or princess), and using the name marshal for the rook+knight compound would reduce this difficulty. The name empress is more widely
Fairy chess piece "pao" and "vao" (derived from the Chinese cannon) and the "mao" (derived from the horse). Those derived from the cannon are distinguished by moving as a hopper when capturing, but otherwise moving as a rider. Pieces from xiangqi are usually circular disks, labeled or engraved with a Chinese character identifying the piece. Pieces from shogi (Japanese chess) are usually wedge-shaped chips, with kanji characters identifying the piece. Fairy pieces vary in the way they move, but some may also have other special characteristics or powers. The joker (in one of its definitions) mimics the last move made by the opponent.