Which term is synonymous with a dead body?

The term "corpse" is often used in the context of a deceased human body, making it a direct synonym for a dead body. It is commonly recognized in both medical and legal contexts to refer specifically to the body of a deceased individual. While all the other options may also relate to a dead body, "corpse" has a specific connotation that is widely understood in varied disciplines such as forensic science, healthcare, and even in layman's usage when discussing death.

For instance, "cadaver" generally specifically refers to a dead body used for medical study, often in the context of anatomy classes and research. "Remains" can refer broadly to the parts of a deceased individual, which could include bones or ashes, thus not always indicating an intact body. The term "body" can refer to a living person as well and is less specific. Therefore, "corpse" is the most straightforward synonym for a dead body within the given choices.