The term ARTIST GUM is composed of three words: ERASER (6 letters), TREE (4 letters) and CHICLE (6 letters). ERASER is a tool used to remove pencil marks from paper. TREE is a tall woody plant that typically has a single trunk growing to a considerable height and bearing lateral branches at some distance from the ground. CHICLE is a natural gum made from the sap of several species of Central American trees, most notably the sapodilla tree. Together, these three words form the term ARTIST GUM, which is a type of gum used by artists to create rubbings or impressions of textures.