River

A canal also has moving water, but is man-made. Generally, the difference is size: you can step over a brook, jump over a creek, wade across a stream, and swim across a river. But the distinction between them (especially creek and stream) is somewhat hazy, and depends on who named them and when they were named

https://english.stackexchange.com/questions/31471/whats-the-difference-between-these-names-of-moving-water