Machine Learning used to be considered a sub-discipline of AI (open an AI textbook and you'll see a couple chapters on it). It's grown so big that now it's a te

Machine Learning used to be considered a sub-discipline of AI (open an AI textbook and you'll see a couple chapters on it). It's grown so big that now it's a term used in and of itself outside of AI. It is starting to be seen as distinctive from "traditional" AI in some circles. So the correct understanding is either that Machine Learning is a subset of AI or that Machine Learning is a field that emerged from AI.