What is the difference between erasure and erasure techniques?

"Brush" is to use the brush dipped in thick color on the dry color surface with the brush brush to finish the transition from light color block to dark color block, bright color, highlight color. The erasure method is used to cover the light color to the dark color, more commonly seen in classical painting "lift white". Titian, the founder of modern painting, was a master of erasers. In the Painting of Pietro, Titian skillfully used the technique of erasers to complete the conversion of highlights and the relationship between light and shade. Rembrandt, another master of erasure technique, used a dry brush and a small amount of thick paint to erasure his face in his later self-portraits, creating powerful images. Figure 32 Rembrandt's Self-Portrait. The "erasure" technique is mostly used in the monochromatic flat painting stage. Start with a simple composition and layering in monochrome on a white base, then use a paintbrush (dipped in turpentine) to erase the tint and expose the white base. This is kind of the reverse way. Since rubbing must be done on wet colors, this technique is especially suitable for the initial stage of painting. When the layer dries, it can be used as a base color to continue painting on.