Geography is derived from the Greek word: γεωγραφία (geographia). When broken down, it means "earth, describe, and write". It is the study of the Earth and its lands, features, inhabitants, and phenomena (things that happen on the earth). the main research points of Geography are the analysis of natural and human featues, area studies of places and regions,study of man-land relationship, and research in earth sciences. Geography nowadays is an all-encompassing discipline that seeks to understand the Earth and all of its human and natural complexes and features—not merely where objects are, but how they have changed and come to be(e.g.rocks). Geography is thus separated into two sub-headings: physical and human geography.