Ceratosaurus is a genus of theropod dinosaur that lived during the Late Jurassic Period. The name "Ceratosaurus" means "horned lizard" and refers to the horn-like structure on its snout. However, there are several other synonymous names used for this dinosaur, including "Ceratosauria", "Ceratosauridae", and "Ceratosauripoda". These names are used to describe the evolutionary relationships between different species of horned dinosaurs. Additionally, the term "Ceratosaurs" can be used to refer to all theropods with similar facial horns like the Dilophosaurus species. While the name "Ceratosaurus" is the most commonly used name for this dinosaur, other synonymous terms help to provide a more comprehensive understanding of its evolutionary history and physical characteristics.