ocean
A large inland body of water is called a lake. Lakes are typically surrounded by land and are not connected to the ocean.
A lake is the biggest body of water that is surrounded by water on all sides. The largest lake in the world is the Caspian Sea - so called because it is comprised of salt water and the ancient Romans called it a sea like every other salt water body they had encountered. However, as the Caspian Sea is bounded by land on every side, it is by definition a lake.
a large body of water surrounded by land.
A lake.
Lake
Lake.
Ocean
Peninsula
A lake is a large body of water surrounded by land.
a sea
A body of water almost completely surrounded by water is called an ocean. Oceans will often run into each other.
A body of body surrounded by land is can be referred to by several different names. A lake - Generally a freshwater body of water that is fairly sizable. A sea - Usually a saltwater body of water with no outlet to the ocean (such as the Dead Sea). A pond - A smaller body of water than a lake. Usually man made. Usually the preferred term for a large freshwater body of water would be "lake" and a large body of salt water would be a "sea".