Python: What is the difference between a class method and an instance method?

1class User:
2    def __init__(self, name):
3        self.name = name
4
5    # Instance method
6    def greet(self):
7        return f"Hello, {self.name}"
8
9    @classmethod
10    def from_string(cls, user_str):
11        name = user_str.split(",")[0]
12        return cls(name)
13
14u = User.from_string("Alice,25")
15print(u.greet())  # "Hello, Alice"