Collagraphy is a printmaking technique that involves creating a plate from a variety of materials such as cardboard, textured paper or fabric, and then coating it with varnish to create areas of raised and recessed surfaces. One synonym for collagraphy might be relief printing, which refers to any printing technique that involves raised areas on the surface of a printing plate. Another possible term is intaglio printing, which is the opposite of relief printing and involves creating recessed areas in the plate that hold the ink. Other terms that might be used to describe collagraphy include plasticine printing, embossed printing, and carved plate printing.