The phrase "casts hook" has a few synonyms that can be used interchangeably with the original expression. Some of these synonyms include "fishes," "angling," and "lures." These synonyms encompass the act of using a hooked bait to catch fish, which is what "casts hook" means. Another synonym that can be used is "fishing rod," which refers to the instrument used to cast the hook and bait. Additionally, "catching" or "hooking" can also be used to describe the activity of capturing fish using the hook. All of these words evoke the same image and convey the same meaning as "casts hook".