Naieve Bayes Classifiers, support vector machines, decision trees, k-means clustering... these are part of machine learning but not AI. They may be sometimes used in AI, but so are processors and memory chips but those aren't AI either.

"Modern AI" is almost entirely made of neural networks, which is merely one of the topics in machine learning. Older AI was based on things like A*, formal logic systems, fuzzy logic, etc., little of which is "machine learning".