"Came and go" is a term that is often used to describe movement. The term can be replaced with various synonyms to describe the process more vividly. For example, "arrive and depart," "enter and leave," "show up and vanish," or "appear and disappear" can all be used to describe the same thing. Similarly, "in and out," "back and forth," and "to and fro" can be employed to describe movement that is frequent and repetitive in nature. Using synonyms for "came and go" can help add a little flair to your writing, and make it more engaging and descriptive.