The term 'body of salt water' refers to a large body of water that contains a significant amount of salt. This term can be used to refer to both seas and oceans. A SEA is a smaller body of salt water, usually partially enclosed by land, while an OCEAN is a much larger body of salt water that covers most of the Earth's surface. The two crossword solutions for this term are SEA (3 letters) and OCEAN (5 letters).