What is the technique of assembling different materials to create a cohesive artwork called?

The technique of assembling different materials to create a cohesive artwork is known as assemblage. This approach involves bringing together various physical elements—such as found objects, materials, and other three-dimensional items—into a unified whole. Each component retains its original identity while contributing to the overall composition, allowing for versatile artistic expression.

Collage, while similar, specifically refers to the art of combining different images and materials on a two-dimensional surface, rather than three-dimensional arrangements. Mosaic involves creating images or patterns through the arrangement of small pieces of colored glass, stone, or other materials, often generating a specific visual effect rather than a mixed-media composition. Installation artwork typically combines various media and environments to create a holistic experience for viewers, but it may not focus on the assembly of disparate materials in the way assemblage does.