Coastal refers to areas near the coast or shoreline of a body of water. LITTORAL is an 8-letter term meaning relating to the shore of a sea, lake, or river. Onshore is a 7-letter term meaning situated on or near the shore of a body of water. SEASIDE is also a 7-letter term meaning located on or near the sea. All three terms are related to the term coastal, which describes areas near the coast or shoreline of a body of water.