Writing material is a broad term that can refer to a variety of items used for writing. Notepaper, which has nine letters, is a type of PAPER that is often used for writing notes or letters. PAPER, which has five letters, is a thin material made from cellulose pulp derived from wood, rags, or grasses. INK, which has three letters, is a liquid or paste that contains pigments or dyes and is used for writing or printing. CHALK, which has five letters, is a soft, white, powdery limestone that is used for writing on blackboards or other surfaces.