Dilogy 

Two associated movies (e.g. Under Siege and Under Siege II). A Dilogy is the 'smaller version' of a Trilogy.

I really hated the last film in The Matrix trilogy. They should've kept it as a dilogy.

Dilogy by The Aceface January 30, 2007

diology 

A religion that supports watching porn and degrading women and having many wives and many sexual partners.

Did you hear about Diogenes the great he started the religion of diology

diology by Diogenes the great May 10, 2021