Ceratops, meaning "horned face," is a term used to describe a group of herbivorous dinosaurs that lived in the Late Cretaceous period. However, there are many different synonyms for the word ceratops that describe specific species within the group. For example, Triceratops, meaning "three-horned face," is a well-known synonym for ceratops. Other synonyms include Styracosaurus, "spiked lizard", and Pachyrhinosaurus, "thick-nosed lizard." These dinosaurs were all characterized by their large heads, prominent horns, and frills that protected their necks. Synonyms for ceratops are not only useful for identifying specific species of dinosaurs, but also for understanding the diversity that existed within the group.