The document discusses various art mediums and techniques used by artists to communicate ideas and express feelings. It lists different materials used in art like watercolor, fresco, pastel, oil, tempera, encaustic, acrylic, stained glass, tapestry, mosaic, crayons, charcoal, and others. It also describes printing techniques like etching, engraving, relief printing, intaglio printing and others used to duplicate designs. Processes like planographic, stencil, and silkscreen processes are mentioned as well.