The term “Aquafaba” usually refers to the liquid that is drained out of a can of beans, but can also refer to the bean cooking water. I’ve used both to make some fun recipes like vegan macaroons. My experience is that the liquid from the cans is more consistent in texture and easier to use.
I’m not on Facebook anymore, but used to belong to a group called “What Fat Vegans Eat.”
They had some great aquafaba recipes. I also got an aquafaba recipe ebook on Amazon. I’m personally not vegan or even vegetarian, but I do like having tasty things available for family and friends who are.