Gangion is a term often used in the fishing world, specifically for a type of leader or line that connects the main fishing line to the hook or lure. However, there are several synonyms for this word that can be employed to describe this fishing apparatus. One common alternative is "leader", which essentially serves the same purpose. Another synonym is "tracing", which refers to the part of the fishing line used to attach the hook. Additionally, "snood" or "snell" are interchangeable terms that describe the length of line used to connect the hook to the mainline. These synonyms can be utilized interchangeably, depending on the preference of the angler or the fishing technique being employed.