The difference between canoeing and kayaking is that with canoeing you kneel, facing forward, and paddle using a single bladed paddle. You are the one in complete control of your canoe, but it takes skill and practice to get it right. For beginners, it is not always easy to learn.
When a person kayaks, they sit with their legs out in front of them and paddle facing forward using a paddle with more than one blade. The muscles you use to operate a kayak are much different compared to a canoe and beginners should also take the time practice and learn before thinking they can just kayak anywhere. There is a lot to learn and consider when kayaking.
To help you gain a better understanding, read
https://www.smart-start-kayaking.com/best-kayaks-for-beginners to gain a clearer understanding of to kayak and the best kayaks to start out with.