The word 口红 (kǒuhóng), meaning "lipstick", is formed through a direct and visually descriptive combination of its two component characters. The first character, 口 (kǒu), means "mouth", indicating the part of the body where the item is used. The second character, 红 (hóng), means "red", describing the most classic and defining color of the substance. Together, they create a logical compound that essentially means "mouth red", perfectly capturing the object's primary function and appearance in a straightforward, pictorial manner.