Gars are a group of long, predatory fish that belong to the order Lepisosteiformes. These fish are known for their elongated snouts and bony plates that cover their bodies. There are several synonyms that can be used to refer to gars, including garfish, garpike, and billfish. Garfish is a term that is commonly used in Europe, while garpike is more commonly used in the United States. Billfish is a term that is used to refer to a variety of predatory fish, including gars, marlins, and sailfish. These fish are highly sought after by anglers and are known for their aggressive nature and hard-fighting abilities.