Crex crex, commonly known as the corncrake, is a bird species known for its characteristic call. However, there are several synonyms used to refer to this bird, including landrail, corn bird, and corn crake. The landrail name is derived from the bird's habitat in meadows and grasslands. The name corn bird is based on the bird's preference for corn fields during breeding season. Finally, the name corn crake is a reference to the bird's call, which sounds like the word "crake." These synonyms are often used interchangeably depending on the region and context, but they all refer to the same bird species.