Paint is a colored substance that is spread over a surface to form a decorative and protective coating. It has components like pigments, solvents, additives, and resins. There are different types of paints like enamel, emulsion, cement, and bituminous paints. Paints can be water-based or oil-based and are classified according to their composition and drying method. Varnish is a transparent protective finish used in wood finishing that intensifies the natural grains. It forms a hard, durable, water-resistant film and does not hide the wood grains.