Concern in geomorphology is a term used to describe the study of landforms and the processes that shape them. It involves the analysis of TERRAIN, SOIL, and other factors that influence the formation of landforms. TERRAIN is the physical features of an area, such as hills, valleys, and rivers, while SOIL is the uppermost layer of the Earth's surface, composed of organic and inorganic material. Together, these two elements are essential for understanding the formation of landforms.