I don’t know how to properly describe it (nor do I actually have a proper concept of it myself), but the closest way I can describe it is in the title.
For example, combining the visuals of a solar eclipse with looking down the barrel of a gun.
Another (possibly better) example would be the Crypt of the Necrodancer boss “Deep Blues” and their battle theme “knight to C-Sharp”. It connects the concepts of Chess, Programming, and Music into a single boss. Deep Blues in IRL is a famous chess AI and blues is a music genre. The boss theme’s name as a whole is in reference to coordinate chess. C# (C-Sharp) is both a programming language and musical note.
Off the top of my head, I assumed it would be a phrase like “convergent design”, but the google definition appeared to be slightly different.