duology
/djuːˈɒlədʒi
/noun (plural duologies)
A pair of related novels, plays, or films.The trilogy and duology achieved integrated plots, but the episodic nature of the season lent it a fractured feel....
- My favorite movie of his is Waking Life, though the Before duology has been creeping up.
- And now that I am finished with this one, a sequel has taken hold of my imagination, titled Lady Of Monochrome - promising to make this a duology.
Origin
Mid 19th century: from duo- 'two', on the pattern of trilogy.