Pelology refers to the study of mud and sediment deposited by rivers, lakes, and oceans. Some common synonyms for this term include sedimentology, geology, and limnology. Sedimentology is a branch of geology that studies sedimentary rocks and their origins. Geology, on the other hand, refers to the study of the Earth's physical structure, composition, and history. Limnology studies the physical, chemical, and biological properties of freshwater ecosystems. Other synonyms for pelology include paleontology, stratigraphy, and geomorphology, each of which focuses on different aspects of geological science. Regardless of the synonym used, the study of pelology is crucial to understanding Earth's history and its future processes.