Photo montages are a form of art that involves combining multiple photos into a single image. They are often used to create an aesthetically pleasing image or to convey a specific message. Some common synonyms for photo montages include photo collages, photo composites, and photo mosaics. These terms are often interchangeable, but each has its unique nuance. A photo collage typically refers to an arrangement of photos in a grid-like format with little overlap between the photos. Photo composites, on the other hand, are images that are composed of multiple layers of photos blended together seamlessly. A photo mosaic is a larger image made up of smaller, tiled images that together form a larger image.