Collage is that extra school you go to after you graduate high school to learn more things on how to do a job, right? 

No... that's college.... collAge is a form of art that was coined by Georges Braque and Pablo Picasso during the Cubism movement around 1910 as a new avant-garde form of art. Collage is derived from the French word "coller" which means "to glue". Although people argue that Picasso is the first to do collage, the true credit is given to the real "King of Collage", Kurt Schwitters, born in Hanover, Germany on June 20, 1887. He is most famous for his collages; however, he has explored a wide variety of media including painting, drawing, sculpture, graphic design, typography, and sound art and has been linked to the movements of Surrealism, Constructivism, and Dadaism.  Schwitters called this term 'merz'.

The difference between collage and assemblage isn't necessarily with the technique but the presentation. Collage is more of a two-dimensionally flat arrangement of a collection of objects and Assemblage is a three-dimensional sculptural arrangement of the collection of objects.  Assemblage is created with a collection of images that are placed together in a three-dimensional sculptural form often incorporating every day found objects such as beads, necklaces, keys, shoes, wooden boards, bowls, and even urinals. While Assemblage began with artists like Picasso, Schwitters, and the others from the early 1920s, many other artists took the art form and ran with it, such as American artists Jasper Johns and Robert Rauschenberg, French artist Marcel Duchamp, and Italian artist of the arte povera movement Mario Merz, who made art of throwaway rags, soil, and twigs. Merz's goal was to disrupt the traditional view of an art gallery by making the viewer very uncomfortable and on edge, bringing awareness to the commercialized set up of the gallery's expectations and how ridiculous they are.

Take a look at the following images to determine if it is a Collage or an Assemblage...