Quadrivium and Tetralogy

Quadrivium noun - (Middle Ages) a higher division of the curriculum in a medieval university involving arithmetic and music and geometry and astronomy.

Tetralogy and quadrivium are semantically related in four of something topic. In some cases you can use "Tetralogy" instead a noun "Quadrivium".

Tetralogy noun - A series of four related works (plays or operas or novels).

Quadrivium and tetralogy are semantically related in four of something topic. You can use "Quadrivium" instead a noun "Tetralogy".