The act of positioning close together or side by side.
In the class, we were given an exercise by from our lecturer to do the juxtaposition. From my point of view, it means to create something that is impossible and unique combine with one another.
As you can see the images above, we have to combine with two things that is impossible. Other than that, we should create it and when people see it, they will know what is the picture is about. For me, this exercise interesting and unique.