Debris Ocean is a term used to describe the accumulation of waste and other materials that have been discarded into the ocean. The term can also refer to the effects of human activities on the marine environment. CHAD is a four-letter word meaning 'a small fragment or piece of something larger'. FLOTSAM is a seven-letter word meaning 'floating wreckage of a ship or its cargo'. Together, these two words describe the debris that accumulates in the ocean due to human activities.