Fusion

The word "fusion" refers to the merging of two or more distinct elements into a single whole. It's a pretty universal concept, with a great many new genre and style coming about due to thinking X would taste great with Y.

For the comic book, see Fusion.

Tropes involving fusion:

 * Fusion Fic
 * Neoclassical Punk Zydeco Rockabilly
 * Ninja Pirate Zombie Robot
 * X Meets Y