Gullying is a term used to define the erosion of soil or rock due to the flow of water. However, there are many other synonyms for this word, including gully erosion, channeling, and rilling, among others. These synonyms refer to the same process of water cutting through soil and rock to cause a gully, trench or channel. Other possible synonyms include ditching, waterlogging, and land subsidence. Understanding these synonyms can help those who study soil and water management better understand the various ways in which water can erode and damage the environment, and perhaps take proactive steps to prevent it from happening.