If Three is a Trilogy, What is the Term for…
For films or books, you can call a series that contains…
…two things: A “duology”
…four things: A “tetrology”
…five things: A “pentalogy”
…six things: A “hexalogy”
…seven things: A “heptalogy”
…eight things: An “octalogy”
…nine things: A “ennealogy”
…ten things: A “decalogy”