Water colour paintings
When applied with a brush, pigment is dissolved in water and bonded by a colloid agent so that it sticks to the working surface. A work of art in that media has the same name.
Watercolor can be transparent or opaque, and it’s typically used on paper, but it can also be used on silk or vellum. The term comes from the fact that water is always employed in the biggest amount and twice in the purest application of the medium—both to combine pigments and to dilute the colors—in variable degrees.