Haboku

 and are both Japanese painting techniques employed in "suiboku" (ink based), as seen in landscape paintings, involving an abstract simplification of forms and freedom of brushwork. The two terms are often confused with each other in ordinary use. Generally, "haboku" relies on a layered contrast black, gray and white, whereas "hatsuboku" utilizes "splashes" of ink, without leaving clear contours or outlines. In Japan, these styles of painting were firmly founded and spread by the Japanese painter Sesshū Tōyō.