When we think of extraterrestrial spacecrafts, only a handful of words come to mind. However, there are a variety of synonyms that can be used to describe these mysterious vehicles. Spaceships, flying saucers, UFOs, and intergalactic vessels are all synonyms for extraterrestrial spacecrafts. Some may even refer to them as alien craft or starships. Depending on the context, alternate terminology like extraterrestrial vehicles, extraterrestrial flying objects, or ET crafts could also be used. With the vast potential for life beyond our planet, it's important to have a diverse vocabulary to use when describing these possible visitors.