Here's a more detailed explanation:

* Geology is a broad field that encompasses the study of the Earth's physical structure, composition, history, and processes.

* Geomorphology is a sub-discipline of geology that specifically focuses on the origin and evolution of landforms, including mountains, valleys, rivers, and coastlines.

* Surface geology is another related term that refers to the study of the uppermost layers of the Earth's crust, including rocks, soils, and sediments.

So, while "geology" is the overarching term, "geomorphology" and "surface geology" are more specific branches that delve deeper into the study of the Earth's surface.