Inland water refers to any type of waterbody that is situated away from the coast or the ocean. There are several synonyms for this term, including freshwater, internal water, and continental water. Another related term is "inland sea," which typically refers to a large body of water that is landlocked, such as the Caspian Sea. Rivers, lakes, and ponds are all examples of inland water, and each has its own unique qualities and characteristics. These bodies of water are not only important sources of drinking water, but also provide important habitats for a variety of plant and animal species.