Land

• Refers to the land surface and all its characteristics of importance to man’s existence and success.
• Is the integration of all such factors rather than mere likeness or unlikeness in some of the more obvious observable characteristics which determines the similarity or dissimilarity of areal subdivisions in respect to land use potential.
• The concept visualizes that each part of the land surface is the end product of an evolution governed by parent geological material, geo morphological processes, past and present climates and time.

Land system

• Constitute the terrestrial component of the Earth system and encompass all processes and activities related to the human use of land, including socioeconomic, technological and organizational investments and arrangements, as well as the benefits gained from land and the unintended social and ecological outcomes of societal activities.
• Is a region throughout which a recurring pattern of topography, soils and vegetation can be recognized.

Land forms

• A mass of parent material often has a distinct shape with characteristics particle sizes. These characteristics mineral or organic masses are landforms (Familiar landform are mesas, buttes, plateaus, plains, glacial moraines, terraces etc).