The term 'dark yellow' can be described by four different words, all of which have five or six letters. OCHRE is a natural earth pigment that ranges from yellow to brown and is often used in art and architecture. TOPAZ is a yellow-orange gemstone that is often used in jewelry. AMBER is a yellowish-brown fossilized tree resin that is often used in jewelry and decorative items. Ocher is a natural earth pigment that is similar to OCHRE but has a more yellow hue. Ochres are a group of earth pigments that range from yellow to brown. All of these words describe a dark yellow color and are used in various ways in art and design.