How is nihonga (Japanese-style painting) different in technique from Western-style painting?

The word nihonga came to be used after the introduction of Western-style painting, especially oil paintings, after the Meiji period.
The word nihonga actually comprises a variety of schools and styles.
The styles of some recent nihonga artists are similar to those of Western‘stvle painters.
Nihonga uses mineral-based pigments with nikawa (hide or fishbone glue) as a medium on paper or silk.
There are traditional methods of blurring the colors, drawing lines, and preventing the blurring of ink or pigments that can vary with the type of materials used.
These methods require extensive training, an aspect that differs from Western-style painting.